From 7e6ca7aea7faee2f2b5386cffd063b45578120ad Mon Sep 17 00:00:00 2001
From: Tomoya Chiba <tomo.asleep@gmail.com>
Date: Sun, 11 May 2025 21:00:52 +0900
Subject: [PATCH] Generate RBS definitions of attribute method signatures

---
 scripts/generateFiles.ts                      |  18 ++-
 .../interface/annotated_text_edit.rbs         |   9 ++
 .../interface/apply_workspace_edit_params.rbs |   6 +
 .../interface/apply_workspace_edit_result.rbs |   9 ++
 .../call_hierarchy_client_capabilities.rbs    |   3 +
 .../call_hierarchy_incoming_call.rbs          |   6 +
 .../call_hierarchy_incoming_calls_params.rbs  |   9 ++
 .../interface/call_hierarchy_item.rbs         |  24 ++++
 .../interface/call_hierarchy_options.rbs      |   3 +
 .../call_hierarchy_outgoing_call.rbs          |   6 +
 .../call_hierarchy_outgoing_calls_params.rbs  |   9 ++
 .../call_hierarchy_prepare_params.rbs         |   9 ++
 .../call_hierarchy_registration_options.rbs   |   9 ++
 .../protocol/interface/cancel_params.rbs      |   3 +
 .../protocol/interface/change_annotation.rbs  |   9 ++
 .../interface/client_capabilities.rbs         |  18 +++
 .../protocol/interface/code_action.rbs        |  24 ++++
 .../code_action_client_capabilities.rbs       |  21 ++++
 .../interface/code_action_context.rbs         |   9 ++
 .../interface/code_action_options.rbs         |   9 ++
 .../protocol/interface/code_action_params.rbs |  15 +++
 .../code_action_registration_options.rbs      |  12 ++
 .../protocol/interface/code_description.rbs   |   3 +
 .../protocol/interface/code_lens.rbs          |   9 ++
 .../code_lens_client_capabilities.rbs         |   3 +
 .../protocol/interface/code_lens_options.rbs  |   6 +
 .../protocol/interface/code_lens_params.rbs   |   9 ++
 .../code_lens_registration_options.rbs        |   9 ++
 ...ode_lens_workspace_client_capabilities.rbs |   3 +
 .../protocol/interface/color.rbs              |  12 ++
 .../protocol/interface/color_information.rbs  |   6 +
 .../protocol/interface/color_presentation.rbs |   9 ++
 .../interface/color_presentation_params.rbs   |  15 +++
 .../protocol/interface/command.rbs            |   9 ++
 .../completion_client_capabilities.rbs        |  18 +++
 .../protocol/interface/completion_context.rbs |   6 +
 .../protocol/interface/completion_item.rbs    |  57 ++++++++++
 .../completion_item_label_details.rbs         |   6 +
 .../protocol/interface/completion_list.rbs    |   9 ++
 .../protocol/interface/completion_options.rbs |  15 +++
 .../protocol/interface/completion_params.rbs  |  15 +++
 .../completion_registration_options.rbs       |  18 +++
 .../protocol/interface/configuration_item.rbs |   6 +
 .../interface/configuration_params.rbs        |   3 +
 .../protocol/interface/create_file.rbs        |  12 ++
 .../interface/create_file_options.rbs         |   6 +
 .../interface/create_files_params.rbs         |   3 +
 .../declaration_client_capabilities.rbs       |   6 +
 .../interface/declaration_options.rbs         |   3 +
 .../protocol/interface/declaration_params.rbs |  12 ++
 .../declaration_registration_options.rbs      |   9 ++
 .../definition_client_capabilities.rbs        |   6 +
 .../protocol/interface/definition_options.rbs |   3 +
 .../protocol/interface/definition_params.rbs  |  12 ++
 .../definition_registration_options.rbs       |   6 +
 .../protocol/interface/delete_file.rbs        |  12 ++
 .../interface/delete_file_options.rbs         |   6 +
 .../interface/delete_files_params.rbs         |   3 +
 .../protocol/interface/diagnostic.rbs         |  27 +++++
 .../diagnostic_client_capabilities.rbs        |   6 +
 .../protocol/interface/diagnostic_options.rbs |  12 ++
 .../diagnostic_registration_options.rbs       |  18 +++
 .../diagnostic_related_information.rbs        |   6 +
 .../diagnostic_server_cancellation_data.rbs   |   3 +
 ...agnostic_workspace_client_capabilities.rbs |   3 +
 ...ange_configuration_client_capabilities.rbs |   3 +
 .../did_change_configuration_params.rbs       |   3 +
 .../did_change_notebook_document_params.rbs   |   6 +
 .../did_change_text_document_params.rbs       |   6 +
 ...ange_watched_files_client_capabilities.rbs |   6 +
 .../did_change_watched_files_params.rbs       |   3 +
 ...nge_watched_files_registration_options.rbs |   3 +
 .../did_change_workspace_folders_params.rbs   |   3 +
 .../did_close_notebook_document_params.rbs    |   6 +
 .../did_close_text_document_params.rbs        |   3 +
 .../did_open_notebook_document_params.rbs     |   6 +
 .../did_open_text_document_params.rbs         |   3 +
 .../did_save_notebook_document_params.rbs     |   3 +
 .../did_save_text_document_params.rbs         |   6 +
 .../document_color_client_capabilities.rbs    |   3 +
 .../interface/document_color_options.rbs      |   3 +
 .../interface/document_color_params.rbs       |   9 ++
 .../document_color_registration_options.rbs   |   9 ++
 .../interface/document_diagnostic_params.rbs  |  15 +++
 ...ument_diagnostic_report_partial_result.rbs |   3 +
 .../protocol/interface/document_filter.rbs    |   9 ++
 ...ocument_formatting_client_capabilities.rbs |   3 +
 .../interface/document_formatting_options.rbs |   3 +
 .../interface/document_formatting_params.rbs  |   9 ++
 ...cument_formatting_registration_options.rbs |   6 +
 .../protocol/interface/document_highlight.rbs |   6 +
 ...document_highlight_client_capabilities.rbs |   3 +
 .../interface/document_highlight_options.rbs  |   3 +
 .../interface/document_highlight_params.rbs   |  12 ++
 ...ocument_highlight_registration_options.rbs |   6 +
 .../protocol/interface/document_link.rbs      |  12 ++
 .../document_link_client_capabilities.rbs     |   6 +
 .../interface/document_link_options.rbs       |   6 +
 .../interface/document_link_params.rbs        |   9 ++
 .../document_link_registration_options.rbs    |   9 ++
 ...on_type_formatting_client_capabilities.rbs |   3 +
 .../document_on_type_formatting_options.rbs   |   6 +
 .../document_on_type_formatting_params.rbs    |  12 ++
 ...n_type_formatting_registration_options.rbs |   9 ++
 ...t_range_formatting_client_capabilities.rbs |   3 +
 .../document_range_formatting_options.rbs     |   3 +
 .../document_range_formatting_params.rbs      |  12 ++
 ..._range_formatting_registration_options.rbs |   6 +
 .../protocol/interface/document_symbol.rbs    |  24 ++++
 .../document_symbol_client_capabilities.rbs   |  15 +++
 .../interface/document_symbol_options.rbs     |   6 +
 .../interface/document_symbol_params.rbs      |   9 ++
 .../document_symbol_registration_options.rbs  |   9 ++
 .../execute_command_client_capabilities.rbs   |   3 +
 .../interface/execute_command_options.rbs     |   6 +
 .../interface/execute_command_params.rbs      |   9 ++
 .../execute_command_registration_options.rbs  |   6 +
 .../protocol/interface/execution_summary.rbs  |   6 +
 .../protocol/interface/file_create.rbs        |   3 +
 .../protocol/interface/file_delete.rbs        |   3 +
 .../protocol/interface/file_event.rbs         |   6 +
 .../interface/file_operation_filter.rbs       |   6 +
 .../interface/file_operation_pattern.rbs      |   9 ++
 .../file_operation_pattern_options.rbs        |   3 +
 .../file_operation_registration_options.rbs   |   3 +
 .../protocol/interface/file_rename.rbs        |   6 +
 .../interface/file_system_watcher.rbs         |   6 +
 .../protocol/interface/folding_range.rbs      |  18 +++
 .../folding_range_client_capabilities.rbs     |  15 +++
 .../interface/folding_range_options.rbs       |   3 +
 .../interface/folding_range_params.rbs        |   9 ++
 .../folding_range_registration_options.rbs    |   9 ++
 .../protocol/interface/formatting_options.rbs |  15 +++
 .../full_document_diagnostic_report.rbs       |   9 ++
 .../protocol/interface/hover.rbs              |   6 +
 .../interface/hover_client_capabilities.rbs   |   6 +
 .../protocol/interface/hover_options.rbs      |   3 +
 .../protocol/interface/hover_params.rbs       |   9 ++
 .../interface/hover_registration_options.rbs  |   6 +
 .../protocol/interface/hover_result.rbs       |   3 +
 .../implementation_client_capabilities.rbs    |   6 +
 .../interface/implementation_options.rbs      |   3 +
 .../interface/implementation_params.rbs       |  12 ++
 .../implementation_registration_options.rbs   |   9 ++
 .../protocol/interface/initialize_error.rbs   |   3 +
 .../protocol/interface/initialize_params.rbs  |  30 +++++
 .../protocol/interface/initialize_result.rbs  |   6 +
 .../protocol/interface/inlay_hint.rbs         |  24 ++++
 .../inlay_hint_client_capabilities.rbs        |   6 +
 .../interface/inlay_hint_label_part.rbs       |  12 ++
 .../protocol/interface/inlay_hint_options.rbs |   6 +
 .../protocol/interface/inlay_hint_params.rbs  |   9 ++
 .../inlay_hint_registration_options.rbs       |  12 ++
 ...lay_hint_workspace_client_capabilities.rbs |   3 +
 .../inline_value_client_capabilities.rbs      |   3 +
 .../interface/inline_value_context.rbs        |   6 +
 .../inline_value_evaluatable_expression.rbs   |   6 +
 .../interface/inline_value_options.rbs        |   3 +
 .../interface/inline_value_params.rbs         |  12 ++
 .../inline_value_registration_options.rbs     |   9 ++
 .../protocol/interface/inline_value_text.rbs  |   6 +
 .../inline_value_variable_lookup.rbs          |   9 ++
 ...ne_value_workspace_client_capabilities.rbs |   3 +
 .../interface/insert_replace_edit.rbs         |   9 ++
 ...nked_editing_range_client_capabilities.rbs |   3 +
 .../linked_editing_range_options.rbs          |   3 +
 .../interface/linked_editing_range_params.rbs |   9 ++
 ...ked_editing_range_registration_options.rbs |   9 ++
 .../interface/linked_editing_ranges.rbs       |   6 +
 .../protocol/interface/location.rbs           |   6 +
 .../protocol/interface/location_link.rbs      |  12 ++
 .../protocol/interface/log_message_params.rbs |   6 +
 .../protocol/interface/log_trace_params.rbs   |   6 +
 .../protocol/interface/markup_content.rbs     |   6 +
 .../protocol/interface/message.rbs            |   3 +
 .../interface/message_action_item.rbs         |   3 +
 .../protocol/interface/moniker.rbs            |  12 ++
 .../interface/moniker_client_capabilities.rbs |   3 +
 .../protocol/interface/moniker_options.rbs    |   3 +
 .../protocol/interface/moniker_params.rbs     |  12 ++
 .../moniker_registration_options.rbs          |   6 +
 .../protocol/interface/notebook_cell.rbs      |  12 ++
 .../interface/notebook_cell_array_change.rbs  |   9 ++
 .../notebook_cell_text_document_filter.rbs    |   6 +
 .../protocol/interface/notebook_document.rbs  |  15 +++
 .../notebook_document_change_event.rbs        |   6 +
 .../notebook_document_client_capabilities.rbs |   3 +
 .../interface/notebook_document_filter.rbs    |   9 ++
 .../notebook_document_identifier.rbs          |   3 +
 ...book_document_sync_client_capabilities.rbs |   6 +
 .../notebook_document_sync_options.rbs        |   6 +
 ...ook_document_sync_registration_options.rbs |   9 ++
 .../interface/notification_message.rbs        |   9 ++
 ...nal_versioned_text_document_identifier.rbs |   6 +
 .../interface/parameter_information.rbs       |   6 +
 .../interface/partial_result_params.rbs       |   3 +
 .../protocol/interface/position.rbs           |   6 +
 .../interface/prepare_rename_params.rbs       |   9 ++
 .../protocol/interface/previous_result_id.rbs |   6 +
 .../protocol/interface/progress_params.rbs    |   6 +
 ...ublish_diagnostics_client_capabilities.rbs |  15 +++
 .../interface/publish_diagnostics_params.rbs  |   9 ++
 .../protocol/interface/range.rbs              |   6 +
 .../reference_client_capabilities.rbs         |   3 +
 .../protocol/interface/reference_context.rbs  |   3 +
 .../protocol/interface/reference_options.rbs  |   3 +
 .../protocol/interface/reference_params.rbs   |  15 +++
 .../reference_registration_options.rbs        |   6 +
 .../protocol/interface/registration.rbs       |   9 ++
 .../interface/registration_params.rbs         |   3 +
 ...egular_expressions_client_capabilities.rbs |   6 +
 ...elated_full_document_diagnostic_report.rbs |  12 ++
 ...d_unchanged_document_diagnostic_report.rbs |   9 ++
 .../protocol/interface/relative_pattern.rbs   |   6 +
 .../interface/rename_client_capabilities.rbs  |  12 ++
 .../protocol/interface/rename_file.rbs        |  15 +++
 .../interface/rename_file_options.rbs         |   6 +
 .../interface/rename_files_params.rbs         |   3 +
 .../protocol/interface/rename_options.rbs     |   6 +
 .../protocol/interface/rename_params.rbs      |  12 ++
 .../interface/rename_registration_options.rbs |   9 ++
 .../protocol/interface/request_message.rbs    |  12 ++
 .../protocol/interface/response_error.rbs     |   9 ++
 .../protocol/interface/response_message.rbs   |  12 ++
 .../protocol/interface/save_options.rbs       |   3 +
 .../protocol/interface/selection_range.rbs    |   6 +
 .../selection_range_client_capabilities.rbs   |   3 +
 .../interface/selection_range_options.rbs     |   3 +
 .../interface/selection_range_params.rbs      |  12 ++
 .../selection_range_registration_options.rbs  |   9 ++
 .../protocol/interface/semantic_tokens.rbs    |   6 +
 .../semantic_tokens_client_capabilities.rbs   |  27 +++++
 .../interface/semantic_tokens_delta.rbs       |   6 +
 .../semantic_tokens_delta_params.rbs          |  12 ++
 .../semantic_tokens_delta_partial_result.rbs  |   3 +
 .../interface/semantic_tokens_edit.rbs        |   9 ++
 .../interface/semantic_tokens_legend.rbs      |   6 +
 .../interface/semantic_tokens_options.rbs     |  12 ++
 .../interface/semantic_tokens_params.rbs      |   9 ++
 .../semantic_tokens_partial_result.rbs        |   3 +
 .../semantic_tokens_range_params.rbs          |  12 ++
 .../semantic_tokens_registration_options.rbs  |  18 +++
 ...c_tokens_workspace_client_capabilities.rbs |   3 +
 .../interface/server_capabilities.rbs         | 105 ++++++++++++++++++
 .../protocol/interface/set_trace_params.rbs   |   3 +
 .../show_document_client_capabilities.rbs     |   3 +
 .../interface/show_document_params.rbs        |  12 ++
 .../interface/show_document_result.rbs        |   3 +
 .../interface/show_message_params.rbs         |   6 +
 ...ow_message_request_client_capabilities.rbs |   3 +
 .../interface/show_message_request_params.rbs |   9 ++
 .../protocol/interface/signature_help.rbs     |   9 ++
 .../signature_help_client_capabilities.rbs    |   9 ++
 .../interface/signature_help_context.rbs      |  12 ++
 .../interface/signature_help_options.rbs      |   9 ++
 .../interface/signature_help_params.rbs       |  12 ++
 .../signature_help_registration_options.rbs   |  12 ++
 .../interface/signature_information.rbs       |  12 ++
 .../interface/static_registration_options.rbs |   3 +
 .../protocol/interface/symbol_information.rbs |  18 +++
 ...t_document_change_registration_options.rbs |   6 +
 .../text_document_client_capabilities.rbs     |  90 +++++++++++++++
 .../text_document_content_change_event.rbs    |   9 ++
 .../protocol/interface/text_document_edit.rbs |   6 +
 .../interface/text_document_identifier.rbs    |   3 +
 .../protocol/interface/text_document_item.rbs |  12 ++
 .../text_document_position_params.rbs         |   6 +
 .../text_document_registration_options.rbs    |   3 +
 ...ext_document_save_registration_options.rbs |   6 +
 ...text_document_sync_client_capabilities.rbs |  12 ++
 .../interface/text_document_sync_options.rbs  |  15 +++
 .../protocol/interface/text_edit.rbs          |   6 +
 .../type_definition_client_capabilities.rbs   |   6 +
 .../interface/type_definition_options.rbs     |   3 +
 .../interface/type_definition_params.rbs      |  12 ++
 .../type_definition_registration_options.rbs  |   9 ++
 .../interface/type_hierarchy_item.rbs         |  24 ++++
 .../interface/type_hierarchy_options.rbs      |   3 +
 .../type_hierarchy_prepare_params.rbs         |   9 ++
 .../type_hierarchy_registration_options.rbs   |   9 ++
 .../type_hierarchy_subtypes_params.rbs        |   9 ++
 .../type_hierarchy_supertypes_params.rbs      |   9 ++
 .../unchanged_document_diagnostic_report.rbs  |   6 +
 .../protocol/interface/unregistration.rbs     |   6 +
 .../interface/unregistration_params.rbs       |   3 +
 ...versioned_notebook_document_identifier.rbs |   6 +
 .../versioned_text_document_identifier.rbs    |   6 +
 .../will_save_text_document_params.rbs        |   6 +
 .../interface/work_done_progress_begin.rbs    |  15 +++
 .../work_done_progress_cancel_params.rbs      |   3 +
 .../work_done_progress_create_params.rbs      |   3 +
 .../interface/work_done_progress_end.rbs      |   6 +
 .../interface/work_done_progress_options.rbs  |   3 +
 .../interface/work_done_progress_params.rbs   |   3 +
 .../interface/work_done_progress_report.rbs   |  12 ++
 .../interface/workspace_diagnostic_params.rbs |  12 ++
 .../interface/workspace_diagnostic_report.rbs |   3 +
 ...space_diagnostic_report_partial_result.rbs |   3 +
 .../protocol/interface/workspace_edit.rbs     |   9 ++
 .../workspace_edit_client_capabilities.rbs    |  15 +++
 .../protocol/interface/workspace_folder.rbs   |   6 +
 .../workspace_folders_change_event.rbs        |   6 +
 .../workspace_folders_server_capabilities.rbs |   6 +
 ...kspace_full_document_diagnostic_report.rbs |  15 +++
 .../protocol/interface/workspace_symbol.rbs   |  18 +++
 .../workspace_symbol_client_capabilities.rbs  |  12 ++
 .../interface/workspace_symbol_options.rbs    |   6 +
 .../interface/workspace_symbol_params.rbs     |   9 ++
 .../workspace_symbol_registration_options.rbs |   6 +
 ...e_unchanged_document_diagnostic_report.rbs |  12 ++
 310 files changed, 2701 insertions(+), 2 deletions(-)

diff --git a/scripts/generateFiles.ts b/scripts/generateFiles.ts
index cb56474..63afd42 100644
--- a/scripts/generateFiles.ts
+++ b/scripts/generateFiles.ts
@@ -291,7 +291,7 @@ const convertTypeToRbs: ((type: string) => string) = (type) => {
   return "untyped";
 };
 
-Handlebars.registerHelper("method_signature", (members: InterfaceResult["members"]) => {
+Handlebars.registerHelper("constructor_signature", (members: InterfaceResult["members"]) => {
   return members
     .map(
       (member) =>
@@ -299,6 +299,15 @@ Handlebars.registerHelper("method_signature", (members: InterfaceResult["members
     )
     .join(", ");
 });
+Handlebars.registerHelper("attribute_signature", (member: SerializeResult) => {
+  const rbsType = convertTypeToRbs(member.type);
+  let suffix = "";
+  if (rbsType !== "untyped" && rbsType !== "nil") {
+    suffix = member.optional || member.nullable ? "?" : "";
+  }
+
+  return `${rbsType}${suffix}`;
+});
 Handlebars.registerHelper("convertTypeToRbs", convertTypeToRbs);
 
 (async () => {
@@ -424,10 +433,15 @@ module LanguageServer
       #
       {{/if}}
       class {{definition.interface.name}}
-        def initialize: ({{method_signature definition.allMembers}}) -> void
+        def initialize: ({{constructor_signature definition.allMembers}}) -> void
 
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
+        {{#each definition.allMembers}}
+
+        %a{pure}
+        def {{snake name}}: () -> {{attribute_signature this}}
+        {{/each}}
 
         def to_hash: () -> Hash[Symbol, untyped]
 
diff --git a/sig/language_server/protocol/interface/annotated_text_edit.rbs b/sig/language_server/protocol/interface/annotated_text_edit.rbs
index 673b58d..6f5b540 100644
--- a/sig/language_server/protocol/interface/annotated_text_edit.rbs
+++ b/sig/language_server/protocol/interface/annotated_text_edit.rbs
@@ -10,6 +10,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def new_text: () -> String
+
+        %a{pure}
+        def annotation_id: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/apply_workspace_edit_params.rbs b/sig/language_server/protocol/interface/apply_workspace_edit_params.rbs
index 929553f..da766b3 100644
--- a/sig/language_server/protocol/interface/apply_workspace_edit_params.rbs
+++ b/sig/language_server/protocol/interface/apply_workspace_edit_params.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def label: () -> String?
+
+        %a{pure}
+        def edit: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/apply_workspace_edit_result.rbs b/sig/language_server/protocol/interface/apply_workspace_edit_result.rbs
index 608bae3..427ee42 100644
--- a/sig/language_server/protocol/interface/apply_workspace_edit_result.rbs
+++ b/sig/language_server/protocol/interface/apply_workspace_edit_result.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def applied: () -> bool
+
+        %a{pure}
+        def failure_reason: () -> String?
+
+        %a{pure}
+        def failed_change: () -> Integer?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/call_hierarchy_client_capabilities.rbs b/sig/language_server/protocol/interface/call_hierarchy_client_capabilities.rbs
index 8c2dbe2..7a3d66a 100644
--- a/sig/language_server/protocol/interface/call_hierarchy_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/call_hierarchy_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/call_hierarchy_incoming_call.rbs b/sig/language_server/protocol/interface/call_hierarchy_incoming_call.rbs
index 81941ab..5f8a738 100644
--- a/sig/language_server/protocol/interface/call_hierarchy_incoming_call.rbs
+++ b/sig/language_server/protocol/interface/call_hierarchy_incoming_call.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def from: () -> untyped
+
+        %a{pure}
+        def from_ranges: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/call_hierarchy_incoming_calls_params.rbs b/sig/language_server/protocol/interface/call_hierarchy_incoming_calls_params.rbs
index fcc4a90..e1fc28e 100644
--- a/sig/language_server/protocol/interface/call_hierarchy_incoming_calls_params.rbs
+++ b/sig/language_server/protocol/interface/call_hierarchy_incoming_calls_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def item: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/call_hierarchy_item.rbs b/sig/language_server/protocol/interface/call_hierarchy_item.rbs
index 3cd9e45..f4d9252 100644
--- a/sig/language_server/protocol/interface/call_hierarchy_item.rbs
+++ b/sig/language_server/protocol/interface/call_hierarchy_item.rbs
@@ -7,6 +7,30 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def name: () -> String
+
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def tags: () -> Array[untyped]?
+
+        %a{pure}
+        def detail: () -> String?
+
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def selection_range: () -> untyped
+
+        %a{pure}
+        def data: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/call_hierarchy_options.rbs b/sig/language_server/protocol/interface/call_hierarchy_options.rbs
index b23bb9c..8aec988 100644
--- a/sig/language_server/protocol/interface/call_hierarchy_options.rbs
+++ b/sig/language_server/protocol/interface/call_hierarchy_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/call_hierarchy_outgoing_call.rbs b/sig/language_server/protocol/interface/call_hierarchy_outgoing_call.rbs
index f6590e4..0154431 100644
--- a/sig/language_server/protocol/interface/call_hierarchy_outgoing_call.rbs
+++ b/sig/language_server/protocol/interface/call_hierarchy_outgoing_call.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def to: () -> untyped
+
+        %a{pure}
+        def from_ranges: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/call_hierarchy_outgoing_calls_params.rbs b/sig/language_server/protocol/interface/call_hierarchy_outgoing_calls_params.rbs
index 80234c8..4844eed 100644
--- a/sig/language_server/protocol/interface/call_hierarchy_outgoing_calls_params.rbs
+++ b/sig/language_server/protocol/interface/call_hierarchy_outgoing_calls_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def item: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/call_hierarchy_prepare_params.rbs b/sig/language_server/protocol/interface/call_hierarchy_prepare_params.rbs
index 6aa7742..74dbd23 100644
--- a/sig/language_server/protocol/interface/call_hierarchy_prepare_params.rbs
+++ b/sig/language_server/protocol/interface/call_hierarchy_prepare_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/call_hierarchy_registration_options.rbs b/sig/language_server/protocol/interface/call_hierarchy_registration_options.rbs
index acc74a2..477dfb1 100644
--- a/sig/language_server/protocol/interface/call_hierarchy_registration_options.rbs
+++ b/sig/language_server/protocol/interface/call_hierarchy_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/cancel_params.rbs b/sig/language_server/protocol/interface/cancel_params.rbs
index 8697884..db05b39 100644
--- a/sig/language_server/protocol/interface/cancel_params.rbs
+++ b/sig/language_server/protocol/interface/cancel_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def id: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/change_annotation.rbs b/sig/language_server/protocol/interface/change_annotation.rbs
index a97c228..05208f5 100644
--- a/sig/language_server/protocol/interface/change_annotation.rbs
+++ b/sig/language_server/protocol/interface/change_annotation.rbs
@@ -10,6 +10,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def label: () -> String
+
+        %a{pure}
+        def needs_confirmation: () -> bool?
+
+        %a{pure}
+        def description: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/client_capabilities.rbs b/sig/language_server/protocol/interface/client_capabilities.rbs
index a8a122d..8a8195d 100644
--- a/sig/language_server/protocol/interface/client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/client_capabilities.rbs
@@ -7,6 +7,24 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def workspace: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def notebook_document: () -> untyped
+
+        %a{pure}
+        def window: () -> untyped
+
+        %a{pure}
+        def general: () -> untyped
+
+        %a{pure}
+        def experimental: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_action.rbs b/sig/language_server/protocol/interface/code_action.rbs
index 80a193a..2bf57e2 100644
--- a/sig/language_server/protocol/interface/code_action.rbs
+++ b/sig/language_server/protocol/interface/code_action.rbs
@@ -14,6 +14,30 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def title: () -> String
+
+        %a{pure}
+        def kind: () -> String?
+
+        %a{pure}
+        def diagnostics: () -> Array[untyped]?
+
+        %a{pure}
+        def is_preferred: () -> bool?
+
+        %a{pure}
+        def disabled: () -> untyped
+
+        %a{pure}
+        def edit: () -> untyped
+
+        %a{pure}
+        def command: () -> untyped
+
+        %a{pure}
+        def data: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_action_client_capabilities.rbs b/sig/language_server/protocol/interface/code_action_client_capabilities.rbs
index c753aba..0382ed4 100644
--- a/sig/language_server/protocol/interface/code_action_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/code_action_client_capabilities.rbs
@@ -7,6 +7,27 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def code_action_literal_support: () -> untyped
+
+        %a{pure}
+        def is_preferred_support: () -> bool?
+
+        %a{pure}
+        def disabled_support: () -> bool?
+
+        %a{pure}
+        def data_support: () -> bool?
+
+        %a{pure}
+        def resolve_support: () -> untyped
+
+        %a{pure}
+        def honors_change_annotations: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_action_context.rbs b/sig/language_server/protocol/interface/code_action_context.rbs
index 15d3c65..a7fc815 100644
--- a/sig/language_server/protocol/interface/code_action_context.rbs
+++ b/sig/language_server/protocol/interface/code_action_context.rbs
@@ -11,6 +11,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def diagnostics: () -> Array[untyped]
+
+        %a{pure}
+        def only: () -> Array[String]?
+
+        %a{pure}
+        def trigger_kind: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_action_options.rbs b/sig/language_server/protocol/interface/code_action_options.rbs
index 358bc98..406a3b3 100644
--- a/sig/language_server/protocol/interface/code_action_options.rbs
+++ b/sig/language_server/protocol/interface/code_action_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def code_action_kinds: () -> Array[String]?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_action_params.rbs b/sig/language_server/protocol/interface/code_action_params.rbs
index c2b500b..a5aacb0 100644
--- a/sig/language_server/protocol/interface/code_action_params.rbs
+++ b/sig/language_server/protocol/interface/code_action_params.rbs
@@ -10,6 +10,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def context: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_action_registration_options.rbs b/sig/language_server/protocol/interface/code_action_registration_options.rbs
index db28a6f..b978098 100644
--- a/sig/language_server/protocol/interface/code_action_registration_options.rbs
+++ b/sig/language_server/protocol/interface/code_action_registration_options.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def code_action_kinds: () -> Array[String]?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_description.rbs b/sig/language_server/protocol/interface/code_description.rbs
index d3de442..7e88aed 100644
--- a/sig/language_server/protocol/interface/code_description.rbs
+++ b/sig/language_server/protocol/interface/code_description.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def href: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_lens.rbs b/sig/language_server/protocol/interface/code_lens.rbs
index 56df3e8..f5e6370 100644
--- a/sig/language_server/protocol/interface/code_lens.rbs
+++ b/sig/language_server/protocol/interface/code_lens.rbs
@@ -15,6 +15,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def command: () -> untyped
+
+        %a{pure}
+        def data: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_lens_client_capabilities.rbs b/sig/language_server/protocol/interface/code_lens_client_capabilities.rbs
index 94ad567..11604aa 100644
--- a/sig/language_server/protocol/interface/code_lens_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/code_lens_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_lens_options.rbs b/sig/language_server/protocol/interface/code_lens_options.rbs
index 2b02b02..91c7b53 100644
--- a/sig/language_server/protocol/interface/code_lens_options.rbs
+++ b/sig/language_server/protocol/interface/code_lens_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_lens_params.rbs b/sig/language_server/protocol/interface/code_lens_params.rbs
index 3b47117..e732e1f 100644
--- a/sig/language_server/protocol/interface/code_lens_params.rbs
+++ b/sig/language_server/protocol/interface/code_lens_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_lens_registration_options.rbs b/sig/language_server/protocol/interface/code_lens_registration_options.rbs
index 579345f..372e63b 100644
--- a/sig/language_server/protocol/interface/code_lens_registration_options.rbs
+++ b/sig/language_server/protocol/interface/code_lens_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/code_lens_workspace_client_capabilities.rbs b/sig/language_server/protocol/interface/code_lens_workspace_client_capabilities.rbs
index 60961af..b5298d9 100644
--- a/sig/language_server/protocol/interface/code_lens_workspace_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/code_lens_workspace_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def refresh_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/color.rbs b/sig/language_server/protocol/interface/color.rbs
index 222d088..db0d27f 100644
--- a/sig/language_server/protocol/interface/color.rbs
+++ b/sig/language_server/protocol/interface/color.rbs
@@ -10,6 +10,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def red: () -> Integer
+
+        %a{pure}
+        def green: () -> Integer
+
+        %a{pure}
+        def blue: () -> Integer
+
+        %a{pure}
+        def alpha: () -> Integer
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/color_information.rbs b/sig/language_server/protocol/interface/color_information.rbs
index a331534..e78981f 100644
--- a/sig/language_server/protocol/interface/color_information.rbs
+++ b/sig/language_server/protocol/interface/color_information.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def color: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/color_presentation.rbs b/sig/language_server/protocol/interface/color_presentation.rbs
index bdf44b6..003f79d 100644
--- a/sig/language_server/protocol/interface/color_presentation.rbs
+++ b/sig/language_server/protocol/interface/color_presentation.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def label: () -> String
+
+        %a{pure}
+        def text_edit: () -> untyped
+
+        %a{pure}
+        def additional_text_edits: () -> Array[untyped]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/color_presentation_params.rbs b/sig/language_server/protocol/interface/color_presentation_params.rbs
index 03cb8e4..59bc170 100644
--- a/sig/language_server/protocol/interface/color_presentation_params.rbs
+++ b/sig/language_server/protocol/interface/color_presentation_params.rbs
@@ -7,6 +7,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def color: () -> untyped
+
+        %a{pure}
+        def range: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/command.rbs b/sig/language_server/protocol/interface/command.rbs
index 7d069cb..33ccd38 100644
--- a/sig/language_server/protocol/interface/command.rbs
+++ b/sig/language_server/protocol/interface/command.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def title: () -> String
+
+        %a{pure}
+        def command: () -> String
+
+        %a{pure}
+        def arguments: () -> Array[untyped]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/completion_client_capabilities.rbs b/sig/language_server/protocol/interface/completion_client_capabilities.rbs
index 7b6b9dd..21bf169 100644
--- a/sig/language_server/protocol/interface/completion_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/completion_client_capabilities.rbs
@@ -7,6 +7,24 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def completion_item: () -> untyped
+
+        %a{pure}
+        def completion_item_kind: () -> untyped
+
+        %a{pure}
+        def context_support: () -> bool?
+
+        %a{pure}
+        def insert_text_mode: () -> untyped
+
+        %a{pure}
+        def completion_list: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/completion_context.rbs b/sig/language_server/protocol/interface/completion_context.rbs
index 2d29942..09d1ac3 100644
--- a/sig/language_server/protocol/interface/completion_context.rbs
+++ b/sig/language_server/protocol/interface/completion_context.rbs
@@ -11,6 +11,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def trigger_kind: () -> untyped
+
+        %a{pure}
+        def trigger_character: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/completion_item.rbs b/sig/language_server/protocol/interface/completion_item.rbs
index c257d6c..b06427c 100644
--- a/sig/language_server/protocol/interface/completion_item.rbs
+++ b/sig/language_server/protocol/interface/completion_item.rbs
@@ -7,6 +7,63 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def label: () -> String
+
+        %a{pure}
+        def label_details: () -> untyped
+
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def tags: () -> Array[untyped]?
+
+        %a{pure}
+        def detail: () -> String?
+
+        %a{pure}
+        def documentation: () -> untyped
+
+        %a{pure}
+        def deprecated: () -> bool?
+
+        %a{pure}
+        def preselect: () -> bool?
+
+        %a{pure}
+        def sort_text: () -> String?
+
+        %a{pure}
+        def filter_text: () -> String?
+
+        %a{pure}
+        def insert_text: () -> String?
+
+        %a{pure}
+        def insert_text_format: () -> untyped
+
+        %a{pure}
+        def insert_text_mode: () -> untyped
+
+        %a{pure}
+        def text_edit: () -> untyped
+
+        %a{pure}
+        def text_edit_text: () -> String?
+
+        %a{pure}
+        def additional_text_edits: () -> Array[untyped]?
+
+        %a{pure}
+        def commit_characters: () -> Array[String]?
+
+        %a{pure}
+        def command: () -> untyped
+
+        %a{pure}
+        def data: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/completion_item_label_details.rbs b/sig/language_server/protocol/interface/completion_item_label_details.rbs
index 263c01f..bd81e2f 100644
--- a/sig/language_server/protocol/interface/completion_item_label_details.rbs
+++ b/sig/language_server/protocol/interface/completion_item_label_details.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def detail: () -> String?
+
+        %a{pure}
+        def description: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/completion_list.rbs b/sig/language_server/protocol/interface/completion_list.rbs
index c14c8ea..2572465 100644
--- a/sig/language_server/protocol/interface/completion_list.rbs
+++ b/sig/language_server/protocol/interface/completion_list.rbs
@@ -11,6 +11,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def is_incomplete: () -> bool
+
+        %a{pure}
+        def item_defaults: () -> untyped
+
+        %a{pure}
+        def items: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/completion_options.rbs b/sig/language_server/protocol/interface/completion_options.rbs
index 786f93f..cfdaf8f 100644
--- a/sig/language_server/protocol/interface/completion_options.rbs
+++ b/sig/language_server/protocol/interface/completion_options.rbs
@@ -10,6 +10,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def trigger_characters: () -> Array[String]?
+
+        %a{pure}
+        def all_commit_characters: () -> Array[String]?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
+        %a{pure}
+        def completion_item: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/completion_params.rbs b/sig/language_server/protocol/interface/completion_params.rbs
index f1056c7..305338b 100644
--- a/sig/language_server/protocol/interface/completion_params.rbs
+++ b/sig/language_server/protocol/interface/completion_params.rbs
@@ -7,6 +7,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def context: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/completion_registration_options.rbs b/sig/language_server/protocol/interface/completion_registration_options.rbs
index b15c90f..bcdd4c7 100644
--- a/sig/language_server/protocol/interface/completion_registration_options.rbs
+++ b/sig/language_server/protocol/interface/completion_registration_options.rbs
@@ -7,6 +7,24 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def trigger_characters: () -> Array[String]?
+
+        %a{pure}
+        def all_commit_characters: () -> Array[String]?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
+        %a{pure}
+        def completion_item: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/configuration_item.rbs b/sig/language_server/protocol/interface/configuration_item.rbs
index 005e0c3..7611861 100644
--- a/sig/language_server/protocol/interface/configuration_item.rbs
+++ b/sig/language_server/protocol/interface/configuration_item.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def scope_uri: () -> String?
+
+        %a{pure}
+        def section: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/configuration_params.rbs b/sig/language_server/protocol/interface/configuration_params.rbs
index bd315af..cc8affd 100644
--- a/sig/language_server/protocol/interface/configuration_params.rbs
+++ b/sig/language_server/protocol/interface/configuration_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def items: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/create_file.rbs b/sig/language_server/protocol/interface/create_file.rbs
index 3fe7ab9..421ed2a 100644
--- a/sig/language_server/protocol/interface/create_file.rbs
+++ b/sig/language_server/protocol/interface/create_file.rbs
@@ -10,6 +10,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def options: () -> untyped
+
+        %a{pure}
+        def annotation_id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/create_file_options.rbs b/sig/language_server/protocol/interface/create_file_options.rbs
index 4f68de2..f65cfce 100644
--- a/sig/language_server/protocol/interface/create_file_options.rbs
+++ b/sig/language_server/protocol/interface/create_file_options.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def overwrite: () -> bool?
+
+        %a{pure}
+        def ignore_if_exists: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/create_files_params.rbs b/sig/language_server/protocol/interface/create_files_params.rbs
index 8f39f30..5106cad 100644
--- a/sig/language_server/protocol/interface/create_files_params.rbs
+++ b/sig/language_server/protocol/interface/create_files_params.rbs
@@ -11,6 +11,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def files: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/declaration_client_capabilities.rbs b/sig/language_server/protocol/interface/declaration_client_capabilities.rbs
index 72efcf1..78b6ba7 100644
--- a/sig/language_server/protocol/interface/declaration_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/declaration_client_capabilities.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def link_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/declaration_options.rbs b/sig/language_server/protocol/interface/declaration_options.rbs
index 97025f0..71a80a4 100644
--- a/sig/language_server/protocol/interface/declaration_options.rbs
+++ b/sig/language_server/protocol/interface/declaration_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/declaration_params.rbs b/sig/language_server/protocol/interface/declaration_params.rbs
index c0c1b5e..44f7dff 100644
--- a/sig/language_server/protocol/interface/declaration_params.rbs
+++ b/sig/language_server/protocol/interface/declaration_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/declaration_registration_options.rbs b/sig/language_server/protocol/interface/declaration_registration_options.rbs
index 64b5f51..b3c7067 100644
--- a/sig/language_server/protocol/interface/declaration_registration_options.rbs
+++ b/sig/language_server/protocol/interface/declaration_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/definition_client_capabilities.rbs b/sig/language_server/protocol/interface/definition_client_capabilities.rbs
index 7a834bc..b0115d6 100644
--- a/sig/language_server/protocol/interface/definition_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/definition_client_capabilities.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def link_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/definition_options.rbs b/sig/language_server/protocol/interface/definition_options.rbs
index 42e9223..3e41ddf 100644
--- a/sig/language_server/protocol/interface/definition_options.rbs
+++ b/sig/language_server/protocol/interface/definition_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/definition_params.rbs b/sig/language_server/protocol/interface/definition_params.rbs
index 0dc777a..7df9fd2 100644
--- a/sig/language_server/protocol/interface/definition_params.rbs
+++ b/sig/language_server/protocol/interface/definition_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/definition_registration_options.rbs b/sig/language_server/protocol/interface/definition_registration_options.rbs
index 7d77ed4..f98b41f 100644
--- a/sig/language_server/protocol/interface/definition_registration_options.rbs
+++ b/sig/language_server/protocol/interface/definition_registration_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/delete_file.rbs b/sig/language_server/protocol/interface/delete_file.rbs
index bbfcf8c..3630b5f 100644
--- a/sig/language_server/protocol/interface/delete_file.rbs
+++ b/sig/language_server/protocol/interface/delete_file.rbs
@@ -10,6 +10,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def options: () -> untyped
+
+        %a{pure}
+        def annotation_id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/delete_file_options.rbs b/sig/language_server/protocol/interface/delete_file_options.rbs
index 7404312..7bf7320 100644
--- a/sig/language_server/protocol/interface/delete_file_options.rbs
+++ b/sig/language_server/protocol/interface/delete_file_options.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def recursive: () -> bool?
+
+        %a{pure}
+        def ignore_if_not_exists: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/delete_files_params.rbs b/sig/language_server/protocol/interface/delete_files_params.rbs
index b28fa46..69710d5 100644
--- a/sig/language_server/protocol/interface/delete_files_params.rbs
+++ b/sig/language_server/protocol/interface/delete_files_params.rbs
@@ -11,6 +11,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def files: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/diagnostic.rbs b/sig/language_server/protocol/interface/diagnostic.rbs
index ff2e592..8ff2aa6 100644
--- a/sig/language_server/protocol/interface/diagnostic.rbs
+++ b/sig/language_server/protocol/interface/diagnostic.rbs
@@ -7,6 +7,33 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def severity: () -> untyped
+
+        %a{pure}
+        def code: () -> untyped
+
+        %a{pure}
+        def code_description: () -> untyped
+
+        %a{pure}
+        def source: () -> String?
+
+        %a{pure}
+        def message: () -> String
+
+        %a{pure}
+        def tags: () -> Array[untyped]?
+
+        %a{pure}
+        def related_information: () -> Array[untyped]?
+
+        %a{pure}
+        def data: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/diagnostic_client_capabilities.rbs b/sig/language_server/protocol/interface/diagnostic_client_capabilities.rbs
index 0e6727e..a0ebdea 100644
--- a/sig/language_server/protocol/interface/diagnostic_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/diagnostic_client_capabilities.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def related_document_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/diagnostic_options.rbs b/sig/language_server/protocol/interface/diagnostic_options.rbs
index 3ea4996..2d1a0fc 100644
--- a/sig/language_server/protocol/interface/diagnostic_options.rbs
+++ b/sig/language_server/protocol/interface/diagnostic_options.rbs
@@ -10,6 +10,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def identifier: () -> String?
+
+        %a{pure}
+        def inter_file_dependencies: () -> bool
+
+        %a{pure}
+        def workspace_diagnostics: () -> bool
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/diagnostic_registration_options.rbs b/sig/language_server/protocol/interface/diagnostic_registration_options.rbs
index 3909217..50952ff 100644
--- a/sig/language_server/protocol/interface/diagnostic_registration_options.rbs
+++ b/sig/language_server/protocol/interface/diagnostic_registration_options.rbs
@@ -10,6 +10,24 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def identifier: () -> String?
+
+        %a{pure}
+        def inter_file_dependencies: () -> bool
+
+        %a{pure}
+        def workspace_diagnostics: () -> bool
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/diagnostic_related_information.rbs b/sig/language_server/protocol/interface/diagnostic_related_information.rbs
index 29b4f39..f253e3d 100644
--- a/sig/language_server/protocol/interface/diagnostic_related_information.rbs
+++ b/sig/language_server/protocol/interface/diagnostic_related_information.rbs
@@ -12,6 +12,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def location: () -> untyped
+
+        %a{pure}
+        def message: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/diagnostic_server_cancellation_data.rbs b/sig/language_server/protocol/interface/diagnostic_server_cancellation_data.rbs
index 3e6d40b..29cfa8e 100644
--- a/sig/language_server/protocol/interface/diagnostic_server_cancellation_data.rbs
+++ b/sig/language_server/protocol/interface/diagnostic_server_cancellation_data.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def retrigger_request: () -> bool
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/diagnostic_workspace_client_capabilities.rbs b/sig/language_server/protocol/interface/diagnostic_workspace_client_capabilities.rbs
index 07e3ad2..c2c95e3 100644
--- a/sig/language_server/protocol/interface/diagnostic_workspace_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/diagnostic_workspace_client_capabilities.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def refresh_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_change_configuration_client_capabilities.rbs b/sig/language_server/protocol/interface/did_change_configuration_client_capabilities.rbs
index 3fe2d97..6e12938 100644
--- a/sig/language_server/protocol/interface/did_change_configuration_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/did_change_configuration_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_change_configuration_params.rbs b/sig/language_server/protocol/interface/did_change_configuration_params.rbs
index 41d19dc..5143ccd 100644
--- a/sig/language_server/protocol/interface/did_change_configuration_params.rbs
+++ b/sig/language_server/protocol/interface/did_change_configuration_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def settings: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_change_notebook_document_params.rbs b/sig/language_server/protocol/interface/did_change_notebook_document_params.rbs
index 1b5311f..58a8bdf 100644
--- a/sig/language_server/protocol/interface/did_change_notebook_document_params.rbs
+++ b/sig/language_server/protocol/interface/did_change_notebook_document_params.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def notebook_document: () -> untyped
+
+        %a{pure}
+        def change: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_change_text_document_params.rbs b/sig/language_server/protocol/interface/did_change_text_document_params.rbs
index f91ed0e..aa910e0 100644
--- a/sig/language_server/protocol/interface/did_change_text_document_params.rbs
+++ b/sig/language_server/protocol/interface/did_change_text_document_params.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def content_changes: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_change_watched_files_client_capabilities.rbs b/sig/language_server/protocol/interface/did_change_watched_files_client_capabilities.rbs
index 263f8b6..f471528 100644
--- a/sig/language_server/protocol/interface/did_change_watched_files_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/did_change_watched_files_client_capabilities.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def relative_pattern_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_change_watched_files_params.rbs b/sig/language_server/protocol/interface/did_change_watched_files_params.rbs
index 727b783..978d50e 100644
--- a/sig/language_server/protocol/interface/did_change_watched_files_params.rbs
+++ b/sig/language_server/protocol/interface/did_change_watched_files_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def changes: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_change_watched_files_registration_options.rbs b/sig/language_server/protocol/interface/did_change_watched_files_registration_options.rbs
index 5f35934..37b83fa 100644
--- a/sig/language_server/protocol/interface/did_change_watched_files_registration_options.rbs
+++ b/sig/language_server/protocol/interface/did_change_watched_files_registration_options.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def watchers: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_change_workspace_folders_params.rbs b/sig/language_server/protocol/interface/did_change_workspace_folders_params.rbs
index 0491a12..d0f33f0 100644
--- a/sig/language_server/protocol/interface/did_change_workspace_folders_params.rbs
+++ b/sig/language_server/protocol/interface/did_change_workspace_folders_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def event: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_close_notebook_document_params.rbs b/sig/language_server/protocol/interface/did_close_notebook_document_params.rbs
index 59937e4..a057c29 100644
--- a/sig/language_server/protocol/interface/did_close_notebook_document_params.rbs
+++ b/sig/language_server/protocol/interface/did_close_notebook_document_params.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def notebook_document: () -> untyped
+
+        %a{pure}
+        def cell_text_documents: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_close_text_document_params.rbs b/sig/language_server/protocol/interface/did_close_text_document_params.rbs
index 373024f..03752ac 100644
--- a/sig/language_server/protocol/interface/did_close_text_document_params.rbs
+++ b/sig/language_server/protocol/interface/did_close_text_document_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_open_notebook_document_params.rbs b/sig/language_server/protocol/interface/did_open_notebook_document_params.rbs
index 5f4c4db..226fa20 100644
--- a/sig/language_server/protocol/interface/did_open_notebook_document_params.rbs
+++ b/sig/language_server/protocol/interface/did_open_notebook_document_params.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def notebook_document: () -> untyped
+
+        %a{pure}
+        def cell_text_documents: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_open_text_document_params.rbs b/sig/language_server/protocol/interface/did_open_text_document_params.rbs
index 61959f0..1f7159c 100644
--- a/sig/language_server/protocol/interface/did_open_text_document_params.rbs
+++ b/sig/language_server/protocol/interface/did_open_text_document_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_save_notebook_document_params.rbs b/sig/language_server/protocol/interface/did_save_notebook_document_params.rbs
index 276c84e..60c55a1 100644
--- a/sig/language_server/protocol/interface/did_save_notebook_document_params.rbs
+++ b/sig/language_server/protocol/interface/did_save_notebook_document_params.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def notebook_document: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/did_save_text_document_params.rbs b/sig/language_server/protocol/interface/did_save_text_document_params.rbs
index 1ab5c49..b2caf94 100644
--- a/sig/language_server/protocol/interface/did_save_text_document_params.rbs
+++ b/sig/language_server/protocol/interface/did_save_text_document_params.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def text: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_color_client_capabilities.rbs b/sig/language_server/protocol/interface/document_color_client_capabilities.rbs
index 1369384..635971a 100644
--- a/sig/language_server/protocol/interface/document_color_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/document_color_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_color_options.rbs b/sig/language_server/protocol/interface/document_color_options.rbs
index 48e44df..1c57386 100644
--- a/sig/language_server/protocol/interface/document_color_options.rbs
+++ b/sig/language_server/protocol/interface/document_color_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_color_params.rbs b/sig/language_server/protocol/interface/document_color_params.rbs
index 6f99024..14604f7 100644
--- a/sig/language_server/protocol/interface/document_color_params.rbs
+++ b/sig/language_server/protocol/interface/document_color_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_color_registration_options.rbs b/sig/language_server/protocol/interface/document_color_registration_options.rbs
index 8452f68..19aa0e3 100644
--- a/sig/language_server/protocol/interface/document_color_registration_options.rbs
+++ b/sig/language_server/protocol/interface/document_color_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def id: () -> String?
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_diagnostic_params.rbs b/sig/language_server/protocol/interface/document_diagnostic_params.rbs
index 40f3363..af0318c 100644
--- a/sig/language_server/protocol/interface/document_diagnostic_params.rbs
+++ b/sig/language_server/protocol/interface/document_diagnostic_params.rbs
@@ -10,6 +10,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def identifier: () -> String?
+
+        %a{pure}
+        def previous_result_id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_diagnostic_report_partial_result.rbs b/sig/language_server/protocol/interface/document_diagnostic_report_partial_result.rbs
index 97e7406..cb93e38 100644
--- a/sig/language_server/protocol/interface/document_diagnostic_report_partial_result.rbs
+++ b/sig/language_server/protocol/interface/document_diagnostic_report_partial_result.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def related_documents: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_filter.rbs b/sig/language_server/protocol/interface/document_filter.rbs
index da8509d..ddced2f 100644
--- a/sig/language_server/protocol/interface/document_filter.rbs
+++ b/sig/language_server/protocol/interface/document_filter.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def language: () -> String?
+
+        %a{pure}
+        def scheme: () -> String?
+
+        %a{pure}
+        def pattern: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_formatting_client_capabilities.rbs b/sig/language_server/protocol/interface/document_formatting_client_capabilities.rbs
index 2bad76a..9f6cacb 100644
--- a/sig/language_server/protocol/interface/document_formatting_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/document_formatting_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_formatting_options.rbs b/sig/language_server/protocol/interface/document_formatting_options.rbs
index 2c71a9c..498825d 100644
--- a/sig/language_server/protocol/interface/document_formatting_options.rbs
+++ b/sig/language_server/protocol/interface/document_formatting_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_formatting_params.rbs b/sig/language_server/protocol/interface/document_formatting_params.rbs
index c2e1b54..6fef4d1 100644
--- a/sig/language_server/protocol/interface/document_formatting_params.rbs
+++ b/sig/language_server/protocol/interface/document_formatting_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def options: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_formatting_registration_options.rbs b/sig/language_server/protocol/interface/document_formatting_registration_options.rbs
index 37b01e0..98171d1 100644
--- a/sig/language_server/protocol/interface/document_formatting_registration_options.rbs
+++ b/sig/language_server/protocol/interface/document_formatting_registration_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_highlight.rbs b/sig/language_server/protocol/interface/document_highlight.rbs
index c4d6033..178986d 100644
--- a/sig/language_server/protocol/interface/document_highlight.rbs
+++ b/sig/language_server/protocol/interface/document_highlight.rbs
@@ -12,6 +12,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def kind: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_highlight_client_capabilities.rbs b/sig/language_server/protocol/interface/document_highlight_client_capabilities.rbs
index 00ed2f8..1d81a58 100644
--- a/sig/language_server/protocol/interface/document_highlight_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/document_highlight_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_highlight_options.rbs b/sig/language_server/protocol/interface/document_highlight_options.rbs
index 7cef39c..0edeb66 100644
--- a/sig/language_server/protocol/interface/document_highlight_options.rbs
+++ b/sig/language_server/protocol/interface/document_highlight_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_highlight_params.rbs b/sig/language_server/protocol/interface/document_highlight_params.rbs
index 3d6d7a4..5cd876d 100644
--- a/sig/language_server/protocol/interface/document_highlight_params.rbs
+++ b/sig/language_server/protocol/interface/document_highlight_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_highlight_registration_options.rbs b/sig/language_server/protocol/interface/document_highlight_registration_options.rbs
index 7ca70a7..1573891 100644
--- a/sig/language_server/protocol/interface/document_highlight_registration_options.rbs
+++ b/sig/language_server/protocol/interface/document_highlight_registration_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_link.rbs b/sig/language_server/protocol/interface/document_link.rbs
index affb79f..f00c473 100644
--- a/sig/language_server/protocol/interface/document_link.rbs
+++ b/sig/language_server/protocol/interface/document_link.rbs
@@ -11,6 +11,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def target: () -> String?
+
+        %a{pure}
+        def tooltip: () -> String?
+
+        %a{pure}
+        def data: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_link_client_capabilities.rbs b/sig/language_server/protocol/interface/document_link_client_capabilities.rbs
index 383b28b..393d07c 100644
--- a/sig/language_server/protocol/interface/document_link_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/document_link_client_capabilities.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def tooltip_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_link_options.rbs b/sig/language_server/protocol/interface/document_link_options.rbs
index 37f025d..3c2a519 100644
--- a/sig/language_server/protocol/interface/document_link_options.rbs
+++ b/sig/language_server/protocol/interface/document_link_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_link_params.rbs b/sig/language_server/protocol/interface/document_link_params.rbs
index 8cc99a3..1357c59 100644
--- a/sig/language_server/protocol/interface/document_link_params.rbs
+++ b/sig/language_server/protocol/interface/document_link_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_link_registration_options.rbs b/sig/language_server/protocol/interface/document_link_registration_options.rbs
index 13924ce..e9d5340 100644
--- a/sig/language_server/protocol/interface/document_link_registration_options.rbs
+++ b/sig/language_server/protocol/interface/document_link_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_on_type_formatting_client_capabilities.rbs b/sig/language_server/protocol/interface/document_on_type_formatting_client_capabilities.rbs
index dfc959b..a3f473c 100644
--- a/sig/language_server/protocol/interface/document_on_type_formatting_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/document_on_type_formatting_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_on_type_formatting_options.rbs b/sig/language_server/protocol/interface/document_on_type_formatting_options.rbs
index 2a0c745..7b26e14 100644
--- a/sig/language_server/protocol/interface/document_on_type_formatting_options.rbs
+++ b/sig/language_server/protocol/interface/document_on_type_formatting_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def first_trigger_character: () -> String
+
+        %a{pure}
+        def more_trigger_character: () -> Array[String]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_on_type_formatting_params.rbs b/sig/language_server/protocol/interface/document_on_type_formatting_params.rbs
index 7d2e149..608981b 100644
--- a/sig/language_server/protocol/interface/document_on_type_formatting_params.rbs
+++ b/sig/language_server/protocol/interface/document_on_type_formatting_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def ch: () -> String
+
+        %a{pure}
+        def options: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_on_type_formatting_registration_options.rbs b/sig/language_server/protocol/interface/document_on_type_formatting_registration_options.rbs
index e72080e..a5845dd 100644
--- a/sig/language_server/protocol/interface/document_on_type_formatting_registration_options.rbs
+++ b/sig/language_server/protocol/interface/document_on_type_formatting_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def first_trigger_character: () -> String
+
+        %a{pure}
+        def more_trigger_character: () -> Array[String]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_range_formatting_client_capabilities.rbs b/sig/language_server/protocol/interface/document_range_formatting_client_capabilities.rbs
index 5984435..4760337 100644
--- a/sig/language_server/protocol/interface/document_range_formatting_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/document_range_formatting_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_range_formatting_options.rbs b/sig/language_server/protocol/interface/document_range_formatting_options.rbs
index 080b8d4..e0d8256 100644
--- a/sig/language_server/protocol/interface/document_range_formatting_options.rbs
+++ b/sig/language_server/protocol/interface/document_range_formatting_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_range_formatting_params.rbs b/sig/language_server/protocol/interface/document_range_formatting_params.rbs
index 4fed302..6e6368d 100644
--- a/sig/language_server/protocol/interface/document_range_formatting_params.rbs
+++ b/sig/language_server/protocol/interface/document_range_formatting_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def options: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_range_formatting_registration_options.rbs b/sig/language_server/protocol/interface/document_range_formatting_registration_options.rbs
index e4fa211..218a8f1 100644
--- a/sig/language_server/protocol/interface/document_range_formatting_registration_options.rbs
+++ b/sig/language_server/protocol/interface/document_range_formatting_registration_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_symbol.rbs b/sig/language_server/protocol/interface/document_symbol.rbs
index b134017..8c300c0 100644
--- a/sig/language_server/protocol/interface/document_symbol.rbs
+++ b/sig/language_server/protocol/interface/document_symbol.rbs
@@ -13,6 +13,30 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def name: () -> String
+
+        %a{pure}
+        def detail: () -> String?
+
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def tags: () -> Array[untyped]?
+
+        %a{pure}
+        def deprecated: () -> bool?
+
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def selection_range: () -> untyped
+
+        %a{pure}
+        def children: () -> Array[untyped]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_symbol_client_capabilities.rbs b/sig/language_server/protocol/interface/document_symbol_client_capabilities.rbs
index da85cd3..0724628 100644
--- a/sig/language_server/protocol/interface/document_symbol_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/document_symbol_client_capabilities.rbs
@@ -7,6 +7,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def symbol_kind: () -> untyped
+
+        %a{pure}
+        def hierarchical_document_symbol_support: () -> bool?
+
+        %a{pure}
+        def tag_support: () -> untyped
+
+        %a{pure}
+        def label_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_symbol_options.rbs b/sig/language_server/protocol/interface/document_symbol_options.rbs
index 56ab7a6..faa7110 100644
--- a/sig/language_server/protocol/interface/document_symbol_options.rbs
+++ b/sig/language_server/protocol/interface/document_symbol_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def label: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_symbol_params.rbs b/sig/language_server/protocol/interface/document_symbol_params.rbs
index 1738165..24c286a 100644
--- a/sig/language_server/protocol/interface/document_symbol_params.rbs
+++ b/sig/language_server/protocol/interface/document_symbol_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/document_symbol_registration_options.rbs b/sig/language_server/protocol/interface/document_symbol_registration_options.rbs
index b771a88..a80656f 100644
--- a/sig/language_server/protocol/interface/document_symbol_registration_options.rbs
+++ b/sig/language_server/protocol/interface/document_symbol_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def label: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/execute_command_client_capabilities.rbs b/sig/language_server/protocol/interface/execute_command_client_capabilities.rbs
index d847e89..569d20a 100644
--- a/sig/language_server/protocol/interface/execute_command_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/execute_command_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/execute_command_options.rbs b/sig/language_server/protocol/interface/execute_command_options.rbs
index 0a56f1f..73a1f03 100644
--- a/sig/language_server/protocol/interface/execute_command_options.rbs
+++ b/sig/language_server/protocol/interface/execute_command_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def commands: () -> Array[String]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/execute_command_params.rbs b/sig/language_server/protocol/interface/execute_command_params.rbs
index 6bbd4ff..a037482 100644
--- a/sig/language_server/protocol/interface/execute_command_params.rbs
+++ b/sig/language_server/protocol/interface/execute_command_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def command: () -> String
+
+        %a{pure}
+        def arguments: () -> Array[untyped]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/execute_command_registration_options.rbs b/sig/language_server/protocol/interface/execute_command_registration_options.rbs
index abbba11..88d23d5 100644
--- a/sig/language_server/protocol/interface/execute_command_registration_options.rbs
+++ b/sig/language_server/protocol/interface/execute_command_registration_options.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def commands: () -> Array[String]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/execution_summary.rbs b/sig/language_server/protocol/interface/execution_summary.rbs
index 378fdc8..aafe8dc 100644
--- a/sig/language_server/protocol/interface/execution_summary.rbs
+++ b/sig/language_server/protocol/interface/execution_summary.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def execution_order: () -> Integer
+
+        %a{pure}
+        def success: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/file_create.rbs b/sig/language_server/protocol/interface/file_create.rbs
index 422c3b7..0705f34 100644
--- a/sig/language_server/protocol/interface/file_create.rbs
+++ b/sig/language_server/protocol/interface/file_create.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/file_delete.rbs b/sig/language_server/protocol/interface/file_delete.rbs
index fbb4764..f28297d 100644
--- a/sig/language_server/protocol/interface/file_delete.rbs
+++ b/sig/language_server/protocol/interface/file_delete.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/file_event.rbs b/sig/language_server/protocol/interface/file_event.rbs
index 7ebd7ad..7158bbe 100644
--- a/sig/language_server/protocol/interface/file_event.rbs
+++ b/sig/language_server/protocol/interface/file_event.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def type: () -> Integer
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/file_operation_filter.rbs b/sig/language_server/protocol/interface/file_operation_filter.rbs
index 530c31c..df007e2 100644
--- a/sig/language_server/protocol/interface/file_operation_filter.rbs
+++ b/sig/language_server/protocol/interface/file_operation_filter.rbs
@@ -11,6 +11,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def scheme: () -> String?
+
+        %a{pure}
+        def pattern: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/file_operation_pattern.rbs b/sig/language_server/protocol/interface/file_operation_pattern.rbs
index 3c976e3..fb0c6a3 100644
--- a/sig/language_server/protocol/interface/file_operation_pattern.rbs
+++ b/sig/language_server/protocol/interface/file_operation_pattern.rbs
@@ -11,6 +11,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def glob: () -> String
+
+        %a{pure}
+        def matches: () -> untyped
+
+        %a{pure}
+        def options: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/file_operation_pattern_options.rbs b/sig/language_server/protocol/interface/file_operation_pattern_options.rbs
index 5820a20..047d600 100644
--- a/sig/language_server/protocol/interface/file_operation_pattern_options.rbs
+++ b/sig/language_server/protocol/interface/file_operation_pattern_options.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def ignore_case: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/file_operation_registration_options.rbs b/sig/language_server/protocol/interface/file_operation_registration_options.rbs
index 3ceee49..2355820 100644
--- a/sig/language_server/protocol/interface/file_operation_registration_options.rbs
+++ b/sig/language_server/protocol/interface/file_operation_registration_options.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def filters: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/file_rename.rbs b/sig/language_server/protocol/interface/file_rename.rbs
index a64aac7..0ca5ef7 100644
--- a/sig/language_server/protocol/interface/file_rename.rbs
+++ b/sig/language_server/protocol/interface/file_rename.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def old_uri: () -> String
+
+        %a{pure}
+        def new_uri: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/file_system_watcher.rbs b/sig/language_server/protocol/interface/file_system_watcher.rbs
index 2380c40..ecf431e 100644
--- a/sig/language_server/protocol/interface/file_system_watcher.rbs
+++ b/sig/language_server/protocol/interface/file_system_watcher.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def glob_pattern: () -> untyped
+
+        %a{pure}
+        def kind: () -> Integer?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/folding_range.rbs b/sig/language_server/protocol/interface/folding_range.rbs
index 7c41fe0..8312e49 100644
--- a/sig/language_server/protocol/interface/folding_range.rbs
+++ b/sig/language_server/protocol/interface/folding_range.rbs
@@ -12,6 +12,24 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def start_line: () -> Integer
+
+        %a{pure}
+        def start_character: () -> Integer?
+
+        %a{pure}
+        def end_line: () -> Integer
+
+        %a{pure}
+        def end_character: () -> Integer?
+
+        %a{pure}
+        def kind: () -> String?
+
+        %a{pure}
+        def collapsed_text: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/folding_range_client_capabilities.rbs b/sig/language_server/protocol/interface/folding_range_client_capabilities.rbs
index 27c2963..5c79304 100644
--- a/sig/language_server/protocol/interface/folding_range_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/folding_range_client_capabilities.rbs
@@ -7,6 +7,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def range_limit: () -> Integer?
+
+        %a{pure}
+        def line_folding_only: () -> bool?
+
+        %a{pure}
+        def folding_range_kind: () -> untyped
+
+        %a{pure}
+        def folding_range: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/folding_range_options.rbs b/sig/language_server/protocol/interface/folding_range_options.rbs
index 3abf5f1..4dca277 100644
--- a/sig/language_server/protocol/interface/folding_range_options.rbs
+++ b/sig/language_server/protocol/interface/folding_range_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/folding_range_params.rbs b/sig/language_server/protocol/interface/folding_range_params.rbs
index 1a149ef..0355d1e 100644
--- a/sig/language_server/protocol/interface/folding_range_params.rbs
+++ b/sig/language_server/protocol/interface/folding_range_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/folding_range_registration_options.rbs b/sig/language_server/protocol/interface/folding_range_registration_options.rbs
index 27c00b3..520d9b2 100644
--- a/sig/language_server/protocol/interface/folding_range_registration_options.rbs
+++ b/sig/language_server/protocol/interface/folding_range_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/formatting_options.rbs b/sig/language_server/protocol/interface/formatting_options.rbs
index 60f9179..d6837eb 100644
--- a/sig/language_server/protocol/interface/formatting_options.rbs
+++ b/sig/language_server/protocol/interface/formatting_options.rbs
@@ -10,6 +10,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def tab_size: () -> Integer
+
+        %a{pure}
+        def insert_spaces: () -> bool
+
+        %a{pure}
+        def trim_trailing_whitespace: () -> bool?
+
+        %a{pure}
+        def insert_final_newline: () -> bool?
+
+        %a{pure}
+        def trim_final_newlines: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/full_document_diagnostic_report.rbs b/sig/language_server/protocol/interface/full_document_diagnostic_report.rbs
index 5a175de..067343c 100644
--- a/sig/language_server/protocol/interface/full_document_diagnostic_report.rbs
+++ b/sig/language_server/protocol/interface/full_document_diagnostic_report.rbs
@@ -10,6 +10,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def result_id: () -> String?
+
+        %a{pure}
+        def items: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/hover.rbs b/sig/language_server/protocol/interface/hover.rbs
index bf09f8e..6ee6f3f 100644
--- a/sig/language_server/protocol/interface/hover.rbs
+++ b/sig/language_server/protocol/interface/hover.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def contents: () -> Array[untyped]
+
+        %a{pure}
+        def range: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/hover_client_capabilities.rbs b/sig/language_server/protocol/interface/hover_client_capabilities.rbs
index e48822f..d17e7a7 100644
--- a/sig/language_server/protocol/interface/hover_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/hover_client_capabilities.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def content_format: () -> Array[untyped]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/hover_options.rbs b/sig/language_server/protocol/interface/hover_options.rbs
index 3d635a8..aa37df9 100644
--- a/sig/language_server/protocol/interface/hover_options.rbs
+++ b/sig/language_server/protocol/interface/hover_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/hover_params.rbs b/sig/language_server/protocol/interface/hover_params.rbs
index 2f23151..888246f 100644
--- a/sig/language_server/protocol/interface/hover_params.rbs
+++ b/sig/language_server/protocol/interface/hover_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/hover_registration_options.rbs b/sig/language_server/protocol/interface/hover_registration_options.rbs
index d5aa73c..8e44542 100644
--- a/sig/language_server/protocol/interface/hover_registration_options.rbs
+++ b/sig/language_server/protocol/interface/hover_registration_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/hover_result.rbs b/sig/language_server/protocol/interface/hover_result.rbs
index a548dc0..82c6d4a 100644
--- a/sig/language_server/protocol/interface/hover_result.rbs
+++ b/sig/language_server/protocol/interface/hover_result.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def value: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/implementation_client_capabilities.rbs b/sig/language_server/protocol/interface/implementation_client_capabilities.rbs
index 90c1520..5931604 100644
--- a/sig/language_server/protocol/interface/implementation_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/implementation_client_capabilities.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def link_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/implementation_options.rbs b/sig/language_server/protocol/interface/implementation_options.rbs
index c559484..460d1c4 100644
--- a/sig/language_server/protocol/interface/implementation_options.rbs
+++ b/sig/language_server/protocol/interface/implementation_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/implementation_params.rbs b/sig/language_server/protocol/interface/implementation_params.rbs
index 7918634..62d1b9a 100644
--- a/sig/language_server/protocol/interface/implementation_params.rbs
+++ b/sig/language_server/protocol/interface/implementation_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/implementation_registration_options.rbs b/sig/language_server/protocol/interface/implementation_registration_options.rbs
index e58cdc6..7ebbfa6 100644
--- a/sig/language_server/protocol/interface/implementation_registration_options.rbs
+++ b/sig/language_server/protocol/interface/implementation_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/initialize_error.rbs b/sig/language_server/protocol/interface/initialize_error.rbs
index fae31bc..a6d2706 100644
--- a/sig/language_server/protocol/interface/initialize_error.rbs
+++ b/sig/language_server/protocol/interface/initialize_error.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def retry: () -> bool
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/initialize_params.rbs b/sig/language_server/protocol/interface/initialize_params.rbs
index 78d978d..a0bac15 100644
--- a/sig/language_server/protocol/interface/initialize_params.rbs
+++ b/sig/language_server/protocol/interface/initialize_params.rbs
@@ -7,6 +7,36 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def process_id: () -> Integer
+
+        %a{pure}
+        def client_info: () -> untyped
+
+        %a{pure}
+        def locale: () -> String?
+
+        %a{pure}
+        def root_path: () -> String?
+
+        %a{pure}
+        def root_uri: () -> String
+
+        %a{pure}
+        def initialization_options: () -> untyped
+
+        %a{pure}
+        def capabilities: () -> untyped
+
+        %a{pure}
+        def trace: () -> untyped
+
+        %a{pure}
+        def workspace_folders: () -> Array[untyped]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/initialize_result.rbs b/sig/language_server/protocol/interface/initialize_result.rbs
index a115db2..b08bf47 100644
--- a/sig/language_server/protocol/interface/initialize_result.rbs
+++ b/sig/language_server/protocol/interface/initialize_result.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def capabilities: () -> untyped
+
+        %a{pure}
+        def server_info: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inlay_hint.rbs b/sig/language_server/protocol/interface/inlay_hint.rbs
index 7a083f2..2db9afc 100644
--- a/sig/language_server/protocol/interface/inlay_hint.rbs
+++ b/sig/language_server/protocol/interface/inlay_hint.rbs
@@ -10,6 +10,30 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def label: () -> Array[untyped]
+
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def text_edits: () -> Array[untyped]?
+
+        %a{pure}
+        def tooltip: () -> untyped
+
+        %a{pure}
+        def padding_left: () -> bool?
+
+        %a{pure}
+        def padding_right: () -> bool?
+
+        %a{pure}
+        def data: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inlay_hint_client_capabilities.rbs b/sig/language_server/protocol/interface/inlay_hint_client_capabilities.rbs
index 20832e0..2db8101 100644
--- a/sig/language_server/protocol/interface/inlay_hint_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/inlay_hint_client_capabilities.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def resolve_support: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inlay_hint_label_part.rbs b/sig/language_server/protocol/interface/inlay_hint_label_part.rbs
index 9afa9f3..bd63654 100644
--- a/sig/language_server/protocol/interface/inlay_hint_label_part.rbs
+++ b/sig/language_server/protocol/interface/inlay_hint_label_part.rbs
@@ -11,6 +11,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def value: () -> String
+
+        %a{pure}
+        def tooltip: () -> untyped
+
+        %a{pure}
+        def location: () -> untyped
+
+        %a{pure}
+        def command: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inlay_hint_options.rbs b/sig/language_server/protocol/interface/inlay_hint_options.rbs
index 775e2e6..35d49df 100644
--- a/sig/language_server/protocol/interface/inlay_hint_options.rbs
+++ b/sig/language_server/protocol/interface/inlay_hint_options.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inlay_hint_params.rbs b/sig/language_server/protocol/interface/inlay_hint_params.rbs
index e3ba665..2f3dadf 100644
--- a/sig/language_server/protocol/interface/inlay_hint_params.rbs
+++ b/sig/language_server/protocol/interface/inlay_hint_params.rbs
@@ -10,6 +10,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def range: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inlay_hint_registration_options.rbs b/sig/language_server/protocol/interface/inlay_hint_registration_options.rbs
index 7e74b87..eea1f7a 100644
--- a/sig/language_server/protocol/interface/inlay_hint_registration_options.rbs
+++ b/sig/language_server/protocol/interface/inlay_hint_registration_options.rbs
@@ -10,6 +10,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inlay_hint_workspace_client_capabilities.rbs b/sig/language_server/protocol/interface/inlay_hint_workspace_client_capabilities.rbs
index cd47dcc..b33aca5 100644
--- a/sig/language_server/protocol/interface/inlay_hint_workspace_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/inlay_hint_workspace_client_capabilities.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def refresh_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inline_value_client_capabilities.rbs b/sig/language_server/protocol/interface/inline_value_client_capabilities.rbs
index 7b7625a..7459851 100644
--- a/sig/language_server/protocol/interface/inline_value_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/inline_value_client_capabilities.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inline_value_context.rbs b/sig/language_server/protocol/interface/inline_value_context.rbs
index 13b89b8..1bce4ba 100644
--- a/sig/language_server/protocol/interface/inline_value_context.rbs
+++ b/sig/language_server/protocol/interface/inline_value_context.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def frame_id: () -> Integer
+
+        %a{pure}
+        def stopped_location: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inline_value_evaluatable_expression.rbs b/sig/language_server/protocol/interface/inline_value_evaluatable_expression.rbs
index 1d8a33f..bf3d4bd 100644
--- a/sig/language_server/protocol/interface/inline_value_evaluatable_expression.rbs
+++ b/sig/language_server/protocol/interface/inline_value_evaluatable_expression.rbs
@@ -15,6 +15,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def expression: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inline_value_options.rbs b/sig/language_server/protocol/interface/inline_value_options.rbs
index eb8c0d6..36285dc 100644
--- a/sig/language_server/protocol/interface/inline_value_options.rbs
+++ b/sig/language_server/protocol/interface/inline_value_options.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inline_value_params.rbs b/sig/language_server/protocol/interface/inline_value_params.rbs
index a614c9d..b56ebd1 100644
--- a/sig/language_server/protocol/interface/inline_value_params.rbs
+++ b/sig/language_server/protocol/interface/inline_value_params.rbs
@@ -10,6 +10,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def context: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inline_value_registration_options.rbs b/sig/language_server/protocol/interface/inline_value_registration_options.rbs
index 5de8776..08d5e44 100644
--- a/sig/language_server/protocol/interface/inline_value_registration_options.rbs
+++ b/sig/language_server/protocol/interface/inline_value_registration_options.rbs
@@ -10,6 +10,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inline_value_text.rbs b/sig/language_server/protocol/interface/inline_value_text.rbs
index 045f0a1..017e0e0 100644
--- a/sig/language_server/protocol/interface/inline_value_text.rbs
+++ b/sig/language_server/protocol/interface/inline_value_text.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def text: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inline_value_variable_lookup.rbs b/sig/language_server/protocol/interface/inline_value_variable_lookup.rbs
index 77cfda6..a832b8c 100644
--- a/sig/language_server/protocol/interface/inline_value_variable_lookup.rbs
+++ b/sig/language_server/protocol/interface/inline_value_variable_lookup.rbs
@@ -15,6 +15,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def variable_name: () -> String?
+
+        %a{pure}
+        def case_sensitive_lookup: () -> bool
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/inline_value_workspace_client_capabilities.rbs b/sig/language_server/protocol/interface/inline_value_workspace_client_capabilities.rbs
index a6ec3e1..028d7f0 100644
--- a/sig/language_server/protocol/interface/inline_value_workspace_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/inline_value_workspace_client_capabilities.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def refresh_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/insert_replace_edit.rbs b/sig/language_server/protocol/interface/insert_replace_edit.rbs
index 6bfdd9f..2dd4fc1 100644
--- a/sig/language_server/protocol/interface/insert_replace_edit.rbs
+++ b/sig/language_server/protocol/interface/insert_replace_edit.rbs
@@ -10,6 +10,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def new_text: () -> String
+
+        %a{pure}
+        def insert: () -> untyped
+
+        %a{pure}
+        def replace: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/linked_editing_range_client_capabilities.rbs b/sig/language_server/protocol/interface/linked_editing_range_client_capabilities.rbs
index d539218..ac824a4 100644
--- a/sig/language_server/protocol/interface/linked_editing_range_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/linked_editing_range_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/linked_editing_range_options.rbs b/sig/language_server/protocol/interface/linked_editing_range_options.rbs
index 49637ea..599f0d5 100644
--- a/sig/language_server/protocol/interface/linked_editing_range_options.rbs
+++ b/sig/language_server/protocol/interface/linked_editing_range_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/linked_editing_range_params.rbs b/sig/language_server/protocol/interface/linked_editing_range_params.rbs
index 15d0df2..5d4d467 100644
--- a/sig/language_server/protocol/interface/linked_editing_range_params.rbs
+++ b/sig/language_server/protocol/interface/linked_editing_range_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/linked_editing_range_registration_options.rbs b/sig/language_server/protocol/interface/linked_editing_range_registration_options.rbs
index 939dd98..34bcd11 100644
--- a/sig/language_server/protocol/interface/linked_editing_range_registration_options.rbs
+++ b/sig/language_server/protocol/interface/linked_editing_range_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/linked_editing_ranges.rbs b/sig/language_server/protocol/interface/linked_editing_ranges.rbs
index 2ec9485..cc16a46 100644
--- a/sig/language_server/protocol/interface/linked_editing_ranges.rbs
+++ b/sig/language_server/protocol/interface/linked_editing_ranges.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def ranges: () -> Array[untyped]
+
+        %a{pure}
+        def word_pattern: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/location.rbs b/sig/language_server/protocol/interface/location.rbs
index e63e7ff..607033f 100644
--- a/sig/language_server/protocol/interface/location.rbs
+++ b/sig/language_server/protocol/interface/location.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def range: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/location_link.rbs b/sig/language_server/protocol/interface/location_link.rbs
index c32164f..9e1df93 100644
--- a/sig/language_server/protocol/interface/location_link.rbs
+++ b/sig/language_server/protocol/interface/location_link.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def origin_selection_range: () -> untyped
+
+        %a{pure}
+        def target_uri: () -> String
+
+        %a{pure}
+        def target_range: () -> untyped
+
+        %a{pure}
+        def target_selection_range: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/log_message_params.rbs b/sig/language_server/protocol/interface/log_message_params.rbs
index 43f9733..79b78c4 100644
--- a/sig/language_server/protocol/interface/log_message_params.rbs
+++ b/sig/language_server/protocol/interface/log_message_params.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def type: () -> untyped
+
+        %a{pure}
+        def message: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/log_trace_params.rbs b/sig/language_server/protocol/interface/log_trace_params.rbs
index 8ed6844..2225951 100644
--- a/sig/language_server/protocol/interface/log_trace_params.rbs
+++ b/sig/language_server/protocol/interface/log_trace_params.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def message: () -> String
+
+        %a{pure}
+        def verbose: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/markup_content.rbs b/sig/language_server/protocol/interface/markup_content.rbs
index 631e0d3..f8f3883 100644
--- a/sig/language_server/protocol/interface/markup_content.rbs
+++ b/sig/language_server/protocol/interface/markup_content.rbs
@@ -33,6 +33,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def value: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/message.rbs b/sig/language_server/protocol/interface/message.rbs
index 4c86582..1ec5de1 100644
--- a/sig/language_server/protocol/interface/message.rbs
+++ b/sig/language_server/protocol/interface/message.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def jsonrpc: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/message_action_item.rbs b/sig/language_server/protocol/interface/message_action_item.rbs
index f0ad40e..9b6b7c1 100644
--- a/sig/language_server/protocol/interface/message_action_item.rbs
+++ b/sig/language_server/protocol/interface/message_action_item.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def title: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/moniker.rbs b/sig/language_server/protocol/interface/moniker.rbs
index 0b8b97e..02363cc 100644
--- a/sig/language_server/protocol/interface/moniker.rbs
+++ b/sig/language_server/protocol/interface/moniker.rbs
@@ -10,6 +10,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def scheme: () -> String
+
+        %a{pure}
+        def identifier: () -> String
+
+        %a{pure}
+        def unique: () -> untyped
+
+        %a{pure}
+        def kind: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/moniker_client_capabilities.rbs b/sig/language_server/protocol/interface/moniker_client_capabilities.rbs
index 6e55a33..2a85b75 100644
--- a/sig/language_server/protocol/interface/moniker_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/moniker_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/moniker_options.rbs b/sig/language_server/protocol/interface/moniker_options.rbs
index c7c168d..360cf57 100644
--- a/sig/language_server/protocol/interface/moniker_options.rbs
+++ b/sig/language_server/protocol/interface/moniker_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/moniker_params.rbs b/sig/language_server/protocol/interface/moniker_params.rbs
index 1b568e4..9f45077 100644
--- a/sig/language_server/protocol/interface/moniker_params.rbs
+++ b/sig/language_server/protocol/interface/moniker_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/moniker_registration_options.rbs b/sig/language_server/protocol/interface/moniker_registration_options.rbs
index 372dbc6..aa7f1b9 100644
--- a/sig/language_server/protocol/interface/moniker_registration_options.rbs
+++ b/sig/language_server/protocol/interface/moniker_registration_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notebook_cell.rbs b/sig/language_server/protocol/interface/notebook_cell.rbs
index efee33d..53d2034 100644
--- a/sig/language_server/protocol/interface/notebook_cell.rbs
+++ b/sig/language_server/protocol/interface/notebook_cell.rbs
@@ -14,6 +14,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def document: () -> String
+
+        %a{pure}
+        def metadata: () -> untyped
+
+        %a{pure}
+        def execution_summary: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notebook_cell_array_change.rbs b/sig/language_server/protocol/interface/notebook_cell_array_change.rbs
index a9f1857..27ec7cd 100644
--- a/sig/language_server/protocol/interface/notebook_cell_array_change.rbs
+++ b/sig/language_server/protocol/interface/notebook_cell_array_change.rbs
@@ -11,6 +11,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def start: () -> Integer
+
+        %a{pure}
+        def delete_count: () -> Integer
+
+        %a{pure}
+        def cells: () -> Array[untyped]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notebook_cell_text_document_filter.rbs b/sig/language_server/protocol/interface/notebook_cell_text_document_filter.rbs
index 936ecfa..8923645 100644
--- a/sig/language_server/protocol/interface/notebook_cell_text_document_filter.rbs
+++ b/sig/language_server/protocol/interface/notebook_cell_text_document_filter.rbs
@@ -11,6 +11,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def notebook: () -> untyped
+
+        %a{pure}
+        def language: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notebook_document.rbs b/sig/language_server/protocol/interface/notebook_document.rbs
index 69dad6c..74e36dd 100644
--- a/sig/language_server/protocol/interface/notebook_document.rbs
+++ b/sig/language_server/protocol/interface/notebook_document.rbs
@@ -10,6 +10,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def notebook_type: () -> String
+
+        %a{pure}
+        def version: () -> Integer
+
+        %a{pure}
+        def metadata: () -> untyped
+
+        %a{pure}
+        def cells: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notebook_document_change_event.rbs b/sig/language_server/protocol/interface/notebook_document_change_event.rbs
index 263a634..92698d3 100644
--- a/sig/language_server/protocol/interface/notebook_document_change_event.rbs
+++ b/sig/language_server/protocol/interface/notebook_document_change_event.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def metadata: () -> untyped
+
+        %a{pure}
+        def cells: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notebook_document_client_capabilities.rbs b/sig/language_server/protocol/interface/notebook_document_client_capabilities.rbs
index 518d046..a41e6c2 100644
--- a/sig/language_server/protocol/interface/notebook_document_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/notebook_document_client_capabilities.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def synchronization: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notebook_document_filter.rbs b/sig/language_server/protocol/interface/notebook_document_filter.rbs
index aa07126..f22e0b4 100644
--- a/sig/language_server/protocol/interface/notebook_document_filter.rbs
+++ b/sig/language_server/protocol/interface/notebook_document_filter.rbs
@@ -11,6 +11,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def notebook_type: () -> String?
+
+        %a{pure}
+        def scheme: () -> String?
+
+        %a{pure}
+        def pattern: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notebook_document_identifier.rbs b/sig/language_server/protocol/interface/notebook_document_identifier.rbs
index ebf3cb6..216c6ca 100644
--- a/sig/language_server/protocol/interface/notebook_document_identifier.rbs
+++ b/sig/language_server/protocol/interface/notebook_document_identifier.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notebook_document_sync_client_capabilities.rbs b/sig/language_server/protocol/interface/notebook_document_sync_client_capabilities.rbs
index a858b6d..06ffb8d 100644
--- a/sig/language_server/protocol/interface/notebook_document_sync_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/notebook_document_sync_client_capabilities.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def execution_summary_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notebook_document_sync_options.rbs b/sig/language_server/protocol/interface/notebook_document_sync_options.rbs
index ea9d22b..801259f 100644
--- a/sig/language_server/protocol/interface/notebook_document_sync_options.rbs
+++ b/sig/language_server/protocol/interface/notebook_document_sync_options.rbs
@@ -20,6 +20,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def notebook_selector: () -> Array[untyped]
+
+        %a{pure}
+        def save: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notebook_document_sync_registration_options.rbs b/sig/language_server/protocol/interface/notebook_document_sync_registration_options.rbs
index e9ce5a2..1682ea5 100644
--- a/sig/language_server/protocol/interface/notebook_document_sync_registration_options.rbs
+++ b/sig/language_server/protocol/interface/notebook_document_sync_registration_options.rbs
@@ -10,6 +10,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def notebook_selector: () -> Array[untyped]
+
+        %a{pure}
+        def save: () -> bool?
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/notification_message.rbs b/sig/language_server/protocol/interface/notification_message.rbs
index ba411aa..5ba9be7 100644
--- a/sig/language_server/protocol/interface/notification_message.rbs
+++ b/sig/language_server/protocol/interface/notification_message.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def jsonrpc: () -> String
+
+        %a{pure}
+        def method: () -> String
+
+        %a{pure}
+        def params: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/optional_versioned_text_document_identifier.rbs b/sig/language_server/protocol/interface/optional_versioned_text_document_identifier.rbs
index 6680968..7bb1c73 100644
--- a/sig/language_server/protocol/interface/optional_versioned_text_document_identifier.rbs
+++ b/sig/language_server/protocol/interface/optional_versioned_text_document_identifier.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def version: () -> Integer
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/parameter_information.rbs b/sig/language_server/protocol/interface/parameter_information.rbs
index f343315..3af4e53 100644
--- a/sig/language_server/protocol/interface/parameter_information.rbs
+++ b/sig/language_server/protocol/interface/parameter_information.rbs
@@ -11,6 +11,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def label: () -> untyped
+
+        %a{pure}
+        def documentation: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/partial_result_params.rbs b/sig/language_server/protocol/interface/partial_result_params.rbs
index 06fb870..63a033a 100644
--- a/sig/language_server/protocol/interface/partial_result_params.rbs
+++ b/sig/language_server/protocol/interface/partial_result_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def partial_result_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/position.rbs b/sig/language_server/protocol/interface/position.rbs
index 739bb74..c842402 100644
--- a/sig/language_server/protocol/interface/position.rbs
+++ b/sig/language_server/protocol/interface/position.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def line: () -> Integer
+
+        %a{pure}
+        def character: () -> Integer
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/prepare_rename_params.rbs b/sig/language_server/protocol/interface/prepare_rename_params.rbs
index 488315a..e089a82 100644
--- a/sig/language_server/protocol/interface/prepare_rename_params.rbs
+++ b/sig/language_server/protocol/interface/prepare_rename_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/previous_result_id.rbs b/sig/language_server/protocol/interface/previous_result_id.rbs
index 929c075..7244cdc 100644
--- a/sig/language_server/protocol/interface/previous_result_id.rbs
+++ b/sig/language_server/protocol/interface/previous_result_id.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def value: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/progress_params.rbs b/sig/language_server/protocol/interface/progress_params.rbs
index 5e03827..5205d2c 100644
--- a/sig/language_server/protocol/interface/progress_params.rbs
+++ b/sig/language_server/protocol/interface/progress_params.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def token: () -> untyped
+
+        %a{pure}
+        def value: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/publish_diagnostics_client_capabilities.rbs b/sig/language_server/protocol/interface/publish_diagnostics_client_capabilities.rbs
index 66685c3..6edec31 100644
--- a/sig/language_server/protocol/interface/publish_diagnostics_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/publish_diagnostics_client_capabilities.rbs
@@ -7,6 +7,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def related_information: () -> bool?
+
+        %a{pure}
+        def tag_support: () -> untyped
+
+        %a{pure}
+        def version_support: () -> bool?
+
+        %a{pure}
+        def code_description_support: () -> bool?
+
+        %a{pure}
+        def data_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/publish_diagnostics_params.rbs b/sig/language_server/protocol/interface/publish_diagnostics_params.rbs
index 0cfe888..8500b32 100644
--- a/sig/language_server/protocol/interface/publish_diagnostics_params.rbs
+++ b/sig/language_server/protocol/interface/publish_diagnostics_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def version: () -> Integer?
+
+        %a{pure}
+        def diagnostics: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/range.rbs b/sig/language_server/protocol/interface/range.rbs
index 95a8270..b89167b 100644
--- a/sig/language_server/protocol/interface/range.rbs
+++ b/sig/language_server/protocol/interface/range.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def start: () -> untyped
+
+        %a{pure}
+        def end: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/reference_client_capabilities.rbs b/sig/language_server/protocol/interface/reference_client_capabilities.rbs
index 81019bf..d5632bf 100644
--- a/sig/language_server/protocol/interface/reference_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/reference_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/reference_context.rbs b/sig/language_server/protocol/interface/reference_context.rbs
index 6eabadb..1753f8a 100644
--- a/sig/language_server/protocol/interface/reference_context.rbs
+++ b/sig/language_server/protocol/interface/reference_context.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def include_declaration: () -> bool
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/reference_options.rbs b/sig/language_server/protocol/interface/reference_options.rbs
index e6a15a5..89e4d48 100644
--- a/sig/language_server/protocol/interface/reference_options.rbs
+++ b/sig/language_server/protocol/interface/reference_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/reference_params.rbs b/sig/language_server/protocol/interface/reference_params.rbs
index 9284828..5868ae8 100644
--- a/sig/language_server/protocol/interface/reference_params.rbs
+++ b/sig/language_server/protocol/interface/reference_params.rbs
@@ -7,6 +7,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def context: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/reference_registration_options.rbs b/sig/language_server/protocol/interface/reference_registration_options.rbs
index 88965b8..6db9971 100644
--- a/sig/language_server/protocol/interface/reference_registration_options.rbs
+++ b/sig/language_server/protocol/interface/reference_registration_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/registration.rbs b/sig/language_server/protocol/interface/registration.rbs
index 5d91baa..116f95b 100644
--- a/sig/language_server/protocol/interface/registration.rbs
+++ b/sig/language_server/protocol/interface/registration.rbs
@@ -10,6 +10,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def id: () -> String
+
+        %a{pure}
+        def method: () -> String
+
+        %a{pure}
+        def register_options: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/registration_params.rbs b/sig/language_server/protocol/interface/registration_params.rbs
index 080463f..cc0f104 100644
--- a/sig/language_server/protocol/interface/registration_params.rbs
+++ b/sig/language_server/protocol/interface/registration_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def registrations: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/regular_expressions_client_capabilities.rbs b/sig/language_server/protocol/interface/regular_expressions_client_capabilities.rbs
index 24232c1..c5a2b6c 100644
--- a/sig/language_server/protocol/interface/regular_expressions_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/regular_expressions_client_capabilities.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def engine: () -> String
+
+        %a{pure}
+        def version: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/related_full_document_diagnostic_report.rbs b/sig/language_server/protocol/interface/related_full_document_diagnostic_report.rbs
index 64430a5..1f79273 100644
--- a/sig/language_server/protocol/interface/related_full_document_diagnostic_report.rbs
+++ b/sig/language_server/protocol/interface/related_full_document_diagnostic_report.rbs
@@ -10,6 +10,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def result_id: () -> String?
+
+        %a{pure}
+        def items: () -> Array[untyped]
+
+        %a{pure}
+        def related_documents: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/related_unchanged_document_diagnostic_report.rbs b/sig/language_server/protocol/interface/related_unchanged_document_diagnostic_report.rbs
index a6f1cd1..04cc8c9 100644
--- a/sig/language_server/protocol/interface/related_unchanged_document_diagnostic_report.rbs
+++ b/sig/language_server/protocol/interface/related_unchanged_document_diagnostic_report.rbs
@@ -10,6 +10,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def result_id: () -> String
+
+        %a{pure}
+        def related_documents: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/relative_pattern.rbs b/sig/language_server/protocol/interface/relative_pattern.rbs
index 5e291e2..6f117ab 100644
--- a/sig/language_server/protocol/interface/relative_pattern.rbs
+++ b/sig/language_server/protocol/interface/relative_pattern.rbs
@@ -12,6 +12,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def base_uri: () -> untyped
+
+        %a{pure}
+        def pattern: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/rename_client_capabilities.rbs b/sig/language_server/protocol/interface/rename_client_capabilities.rbs
index cd8991c..e80c7bf 100644
--- a/sig/language_server/protocol/interface/rename_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/rename_client_capabilities.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def prepare_support: () -> bool?
+
+        %a{pure}
+        def prepare_support_default_behavior: () -> untyped
+
+        %a{pure}
+        def honors_change_annotations: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/rename_file.rbs b/sig/language_server/protocol/interface/rename_file.rbs
index ff9d988..026b96d 100644
--- a/sig/language_server/protocol/interface/rename_file.rbs
+++ b/sig/language_server/protocol/interface/rename_file.rbs
@@ -10,6 +10,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def old_uri: () -> String
+
+        %a{pure}
+        def new_uri: () -> String
+
+        %a{pure}
+        def options: () -> untyped
+
+        %a{pure}
+        def annotation_id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/rename_file_options.rbs b/sig/language_server/protocol/interface/rename_file_options.rbs
index 5aa92bb..6803fe8 100644
--- a/sig/language_server/protocol/interface/rename_file_options.rbs
+++ b/sig/language_server/protocol/interface/rename_file_options.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def overwrite: () -> bool?
+
+        %a{pure}
+        def ignore_if_exists: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/rename_files_params.rbs b/sig/language_server/protocol/interface/rename_files_params.rbs
index 707bbce..7060e46 100644
--- a/sig/language_server/protocol/interface/rename_files_params.rbs
+++ b/sig/language_server/protocol/interface/rename_files_params.rbs
@@ -11,6 +11,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def files: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/rename_options.rbs b/sig/language_server/protocol/interface/rename_options.rbs
index d1edcb7..b503ca6 100644
--- a/sig/language_server/protocol/interface/rename_options.rbs
+++ b/sig/language_server/protocol/interface/rename_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def prepare_provider: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/rename_params.rbs b/sig/language_server/protocol/interface/rename_params.rbs
index f91fa62..1327e80 100644
--- a/sig/language_server/protocol/interface/rename_params.rbs
+++ b/sig/language_server/protocol/interface/rename_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def new_name: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/rename_registration_options.rbs b/sig/language_server/protocol/interface/rename_registration_options.rbs
index 65679ce..a3c4372 100644
--- a/sig/language_server/protocol/interface/rename_registration_options.rbs
+++ b/sig/language_server/protocol/interface/rename_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def prepare_provider: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/request_message.rbs b/sig/language_server/protocol/interface/request_message.rbs
index f3c36fc..5ecd5cd 100644
--- a/sig/language_server/protocol/interface/request_message.rbs
+++ b/sig/language_server/protocol/interface/request_message.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def jsonrpc: () -> String
+
+        %a{pure}
+        def id: () -> untyped
+
+        %a{pure}
+        def method: () -> String
+
+        %a{pure}
+        def params: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/response_error.rbs b/sig/language_server/protocol/interface/response_error.rbs
index f036ffe..cda43ee 100644
--- a/sig/language_server/protocol/interface/response_error.rbs
+++ b/sig/language_server/protocol/interface/response_error.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def code: () -> Integer
+
+        %a{pure}
+        def message: () -> String
+
+        %a{pure}
+        def data: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/response_message.rbs b/sig/language_server/protocol/interface/response_message.rbs
index a8e402e..bccbded 100644
--- a/sig/language_server/protocol/interface/response_message.rbs
+++ b/sig/language_server/protocol/interface/response_message.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def jsonrpc: () -> String
+
+        %a{pure}
+        def id: () -> untyped
+
+        %a{pure}
+        def result: () -> untyped
+
+        %a{pure}
+        def error: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/save_options.rbs b/sig/language_server/protocol/interface/save_options.rbs
index b22881b..ca3cf3b 100644
--- a/sig/language_server/protocol/interface/save_options.rbs
+++ b/sig/language_server/protocol/interface/save_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def include_text: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/selection_range.rbs b/sig/language_server/protocol/interface/selection_range.rbs
index 349df55..c10cf2c 100644
--- a/sig/language_server/protocol/interface/selection_range.rbs
+++ b/sig/language_server/protocol/interface/selection_range.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def parent: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/selection_range_client_capabilities.rbs b/sig/language_server/protocol/interface/selection_range_client_capabilities.rbs
index 548c118..45ef999 100644
--- a/sig/language_server/protocol/interface/selection_range_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/selection_range_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/selection_range_options.rbs b/sig/language_server/protocol/interface/selection_range_options.rbs
index 5fb4cb4..dc4a709 100644
--- a/sig/language_server/protocol/interface/selection_range_options.rbs
+++ b/sig/language_server/protocol/interface/selection_range_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/selection_range_params.rbs b/sig/language_server/protocol/interface/selection_range_params.rbs
index 0d92228..f335250 100644
--- a/sig/language_server/protocol/interface/selection_range_params.rbs
+++ b/sig/language_server/protocol/interface/selection_range_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def positions: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/selection_range_registration_options.rbs b/sig/language_server/protocol/interface/selection_range_registration_options.rbs
index e20f60a..f57ba3e 100644
--- a/sig/language_server/protocol/interface/selection_range_registration_options.rbs
+++ b/sig/language_server/protocol/interface/selection_range_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens.rbs b/sig/language_server/protocol/interface/semantic_tokens.rbs
index 85a402f..18f6d05 100644
--- a/sig/language_server/protocol/interface/semantic_tokens.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def result_id: () -> String?
+
+        %a{pure}
+        def data: () -> Array[Integer]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_client_capabilities.rbs b/sig/language_server/protocol/interface/semantic_tokens_client_capabilities.rbs
index 2e9e433..2af2c1e 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_client_capabilities.rbs
@@ -7,6 +7,33 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def requests: () -> untyped
+
+        %a{pure}
+        def token_types: () -> Array[String]
+
+        %a{pure}
+        def token_modifiers: () -> Array[String]
+
+        %a{pure}
+        def formats: () -> Array[untyped]
+
+        %a{pure}
+        def overlapping_token_support: () -> bool?
+
+        %a{pure}
+        def multiline_token_support: () -> bool?
+
+        %a{pure}
+        def server_cancel_support: () -> bool?
+
+        %a{pure}
+        def augments_syntax_tokens: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_delta.rbs b/sig/language_server/protocol/interface/semantic_tokens_delta.rbs
index 061a168..fb51b09 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_delta.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_delta.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def result_id: () -> String?
+
+        %a{pure}
+        def edits: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_delta_params.rbs b/sig/language_server/protocol/interface/semantic_tokens_delta_params.rbs
index 81cf844..058240b 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_delta_params.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_delta_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def previous_result_id: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_delta_partial_result.rbs b/sig/language_server/protocol/interface/semantic_tokens_delta_partial_result.rbs
index 28e28ac..49d6a6f 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_delta_partial_result.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_delta_partial_result.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def edits: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_edit.rbs b/sig/language_server/protocol/interface/semantic_tokens_edit.rbs
index 2619932..3fe0a16 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_edit.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_edit.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def start: () -> Integer
+
+        %a{pure}
+        def delete_count: () -> Integer
+
+        %a{pure}
+        def data: () -> Array[Integer]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_legend.rbs b/sig/language_server/protocol/interface/semantic_tokens_legend.rbs
index 8faa221..6b1ec53 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_legend.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_legend.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def token_types: () -> Array[String]
+
+        %a{pure}
+        def token_modifiers: () -> Array[String]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_options.rbs b/sig/language_server/protocol/interface/semantic_tokens_options.rbs
index 9d5d134..20754f4 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_options.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_options.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def legend: () -> untyped
+
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def full: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_params.rbs b/sig/language_server/protocol/interface/semantic_tokens_params.rbs
index ae8fe90..5620c33 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_params.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_partial_result.rbs b/sig/language_server/protocol/interface/semantic_tokens_partial_result.rbs
index 3879926..cf0cf19 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_partial_result.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_partial_result.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def data: () -> Array[Integer]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_range_params.rbs b/sig/language_server/protocol/interface/semantic_tokens_range_params.rbs
index e6ccd8a..7008bc1 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_range_params.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_range_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def range: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_registration_options.rbs b/sig/language_server/protocol/interface/semantic_tokens_registration_options.rbs
index 5915955..f043ade 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_registration_options.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_registration_options.rbs
@@ -7,6 +7,24 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def legend: () -> untyped
+
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def full: () -> untyped
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/semantic_tokens_workspace_client_capabilities.rbs b/sig/language_server/protocol/interface/semantic_tokens_workspace_client_capabilities.rbs
index e2ee45d..5663335 100644
--- a/sig/language_server/protocol/interface/semantic_tokens_workspace_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/semantic_tokens_workspace_client_capabilities.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def refresh_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/server_capabilities.rbs b/sig/language_server/protocol/interface/server_capabilities.rbs
index 4d02b15..2993408 100644
--- a/sig/language_server/protocol/interface/server_capabilities.rbs
+++ b/sig/language_server/protocol/interface/server_capabilities.rbs
@@ -7,6 +7,111 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def position_encoding: () -> String?
+
+        %a{pure}
+        def text_document_sync: () -> untyped
+
+        %a{pure}
+        def notebook_document_sync: () -> untyped
+
+        %a{pure}
+        def completion_provider: () -> untyped
+
+        %a{pure}
+        def hover_provider: () -> untyped
+
+        %a{pure}
+        def signature_help_provider: () -> untyped
+
+        %a{pure}
+        def declaration_provider: () -> untyped
+
+        %a{pure}
+        def definition_provider: () -> untyped
+
+        %a{pure}
+        def type_definition_provider: () -> untyped
+
+        %a{pure}
+        def implementation_provider: () -> untyped
+
+        %a{pure}
+        def references_provider: () -> untyped
+
+        %a{pure}
+        def document_highlight_provider: () -> untyped
+
+        %a{pure}
+        def document_symbol_provider: () -> untyped
+
+        %a{pure}
+        def code_action_provider: () -> untyped
+
+        %a{pure}
+        def code_lens_provider: () -> untyped
+
+        %a{pure}
+        def document_link_provider: () -> untyped
+
+        %a{pure}
+        def color_provider: () -> untyped
+
+        %a{pure}
+        def document_formatting_provider: () -> untyped
+
+        %a{pure}
+        def document_range_formatting_provider: () -> untyped
+
+        %a{pure}
+        def document_on_type_formatting_provider: () -> untyped
+
+        %a{pure}
+        def rename_provider: () -> untyped
+
+        %a{pure}
+        def folding_range_provider: () -> untyped
+
+        %a{pure}
+        def execute_command_provider: () -> untyped
+
+        %a{pure}
+        def selection_range_provider: () -> untyped
+
+        %a{pure}
+        def linked_editing_range_provider: () -> untyped
+
+        %a{pure}
+        def call_hierarchy_provider: () -> untyped
+
+        %a{pure}
+        def semantic_tokens_provider: () -> untyped
+
+        %a{pure}
+        def moniker_provider: () -> untyped
+
+        %a{pure}
+        def type_hierarchy_provider: () -> untyped
+
+        %a{pure}
+        def inline_value_provider: () -> untyped
+
+        %a{pure}
+        def inlay_hint_provider: () -> untyped
+
+        %a{pure}
+        def diagnostic_provider: () -> untyped
+
+        %a{pure}
+        def workspace_symbol_provider: () -> untyped
+
+        %a{pure}
+        def workspace: () -> untyped
+
+        %a{pure}
+        def experimental: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/set_trace_params.rbs b/sig/language_server/protocol/interface/set_trace_params.rbs
index 4965139..a0740d2 100644
--- a/sig/language_server/protocol/interface/set_trace_params.rbs
+++ b/sig/language_server/protocol/interface/set_trace_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def value: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/show_document_client_capabilities.rbs b/sig/language_server/protocol/interface/show_document_client_capabilities.rbs
index d0d9ead..5aef95b 100644
--- a/sig/language_server/protocol/interface/show_document_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/show_document_client_capabilities.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def support: () -> bool
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/show_document_params.rbs b/sig/language_server/protocol/interface/show_document_params.rbs
index 37e347c..ae1ca68 100644
--- a/sig/language_server/protocol/interface/show_document_params.rbs
+++ b/sig/language_server/protocol/interface/show_document_params.rbs
@@ -10,6 +10,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def external: () -> bool?
+
+        %a{pure}
+        def take_focus: () -> bool?
+
+        %a{pure}
+        def selection: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/show_document_result.rbs b/sig/language_server/protocol/interface/show_document_result.rbs
index 7e71c71..659f7ca 100644
--- a/sig/language_server/protocol/interface/show_document_result.rbs
+++ b/sig/language_server/protocol/interface/show_document_result.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def success: () -> bool
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/show_message_params.rbs b/sig/language_server/protocol/interface/show_message_params.rbs
index 5a37fc4..677de1f 100644
--- a/sig/language_server/protocol/interface/show_message_params.rbs
+++ b/sig/language_server/protocol/interface/show_message_params.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def type: () -> untyped
+
+        %a{pure}
+        def message: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/show_message_request_client_capabilities.rbs b/sig/language_server/protocol/interface/show_message_request_client_capabilities.rbs
index 5be894a..d890732 100644
--- a/sig/language_server/protocol/interface/show_message_request_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/show_message_request_client_capabilities.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def message_action_item: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/show_message_request_params.rbs b/sig/language_server/protocol/interface/show_message_request_params.rbs
index bcace07..749b898 100644
--- a/sig/language_server/protocol/interface/show_message_request_params.rbs
+++ b/sig/language_server/protocol/interface/show_message_request_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def type: () -> untyped
+
+        %a{pure}
+        def message: () -> String
+
+        %a{pure}
+        def actions: () -> Array[untyped]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/signature_help.rbs b/sig/language_server/protocol/interface/signature_help.rbs
index 691c2dc..ea90069 100644
--- a/sig/language_server/protocol/interface/signature_help.rbs
+++ b/sig/language_server/protocol/interface/signature_help.rbs
@@ -12,6 +12,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def signatures: () -> Array[untyped]
+
+        %a{pure}
+        def active_signature: () -> Integer?
+
+        %a{pure}
+        def active_parameter: () -> Integer?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/signature_help_client_capabilities.rbs b/sig/language_server/protocol/interface/signature_help_client_capabilities.rbs
index 71e6519..bbc30a2 100644
--- a/sig/language_server/protocol/interface/signature_help_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/signature_help_client_capabilities.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def signature_information: () -> untyped
+
+        %a{pure}
+        def context_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/signature_help_context.rbs b/sig/language_server/protocol/interface/signature_help_context.rbs
index a7f2311..f984459 100644
--- a/sig/language_server/protocol/interface/signature_help_context.rbs
+++ b/sig/language_server/protocol/interface/signature_help_context.rbs
@@ -11,6 +11,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def trigger_kind: () -> untyped
+
+        %a{pure}
+        def trigger_character: () -> String?
+
+        %a{pure}
+        def is_retrigger: () -> bool
+
+        %a{pure}
+        def active_signature_help: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/signature_help_options.rbs b/sig/language_server/protocol/interface/signature_help_options.rbs
index 74e5634..775da72 100644
--- a/sig/language_server/protocol/interface/signature_help_options.rbs
+++ b/sig/language_server/protocol/interface/signature_help_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def trigger_characters: () -> Array[String]?
+
+        %a{pure}
+        def retrigger_characters: () -> Array[String]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/signature_help_params.rbs b/sig/language_server/protocol/interface/signature_help_params.rbs
index 9d65832..eced45f 100644
--- a/sig/language_server/protocol/interface/signature_help_params.rbs
+++ b/sig/language_server/protocol/interface/signature_help_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def context: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/signature_help_registration_options.rbs b/sig/language_server/protocol/interface/signature_help_registration_options.rbs
index 2681d69..769c20e 100644
--- a/sig/language_server/protocol/interface/signature_help_registration_options.rbs
+++ b/sig/language_server/protocol/interface/signature_help_registration_options.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def trigger_characters: () -> Array[String]?
+
+        %a{pure}
+        def retrigger_characters: () -> Array[String]?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/signature_information.rbs b/sig/language_server/protocol/interface/signature_information.rbs
index 9ad241f..ebe6112 100644
--- a/sig/language_server/protocol/interface/signature_information.rbs
+++ b/sig/language_server/protocol/interface/signature_information.rbs
@@ -12,6 +12,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def label: () -> String
+
+        %a{pure}
+        def documentation: () -> untyped
+
+        %a{pure}
+        def parameters: () -> Array[untyped]?
+
+        %a{pure}
+        def active_parameter: () -> Integer?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/static_registration_options.rbs b/sig/language_server/protocol/interface/static_registration_options.rbs
index 2f69095..77a0748 100644
--- a/sig/language_server/protocol/interface/static_registration_options.rbs
+++ b/sig/language_server/protocol/interface/static_registration_options.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/symbol_information.rbs b/sig/language_server/protocol/interface/symbol_information.rbs
index 02b9532..0389b0c 100644
--- a/sig/language_server/protocol/interface/symbol_information.rbs
+++ b/sig/language_server/protocol/interface/symbol_information.rbs
@@ -11,6 +11,24 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def name: () -> String
+
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def tags: () -> Array[untyped]?
+
+        %a{pure}
+        def deprecated: () -> bool?
+
+        %a{pure}
+        def location: () -> untyped
+
+        %a{pure}
+        def container_name: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_document_change_registration_options.rbs b/sig/language_server/protocol/interface/text_document_change_registration_options.rbs
index d0cfbdd..99bdeeb 100644
--- a/sig/language_server/protocol/interface/text_document_change_registration_options.rbs
+++ b/sig/language_server/protocol/interface/text_document_change_registration_options.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def sync_kind: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_document_client_capabilities.rbs b/sig/language_server/protocol/interface/text_document_client_capabilities.rbs
index d683a5c..8062026 100644
--- a/sig/language_server/protocol/interface/text_document_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/text_document_client_capabilities.rbs
@@ -10,6 +10,96 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def synchronization: () -> untyped
+
+        %a{pure}
+        def completion: () -> untyped
+
+        %a{pure}
+        def hover: () -> untyped
+
+        %a{pure}
+        def signature_help: () -> untyped
+
+        %a{pure}
+        def declaration: () -> untyped
+
+        %a{pure}
+        def definition: () -> untyped
+
+        %a{pure}
+        def type_definition: () -> untyped
+
+        %a{pure}
+        def implementation: () -> untyped
+
+        %a{pure}
+        def references: () -> untyped
+
+        %a{pure}
+        def document_highlight: () -> untyped
+
+        %a{pure}
+        def document_symbol: () -> untyped
+
+        %a{pure}
+        def code_action: () -> untyped
+
+        %a{pure}
+        def code_lens: () -> untyped
+
+        %a{pure}
+        def document_link: () -> untyped
+
+        %a{pure}
+        def color_provider: () -> untyped
+
+        %a{pure}
+        def formatting: () -> untyped
+
+        %a{pure}
+        def range_formatting: () -> untyped
+
+        %a{pure}
+        def on_type_formatting: () -> untyped
+
+        %a{pure}
+        def rename: () -> untyped
+
+        %a{pure}
+        def publish_diagnostics: () -> untyped
+
+        %a{pure}
+        def folding_range: () -> untyped
+
+        %a{pure}
+        def selection_range: () -> untyped
+
+        %a{pure}
+        def linked_editing_range: () -> untyped
+
+        %a{pure}
+        def call_hierarchy: () -> untyped
+
+        %a{pure}
+        def semantic_tokens: () -> untyped
+
+        %a{pure}
+        def moniker: () -> untyped
+
+        %a{pure}
+        def type_hierarchy: () -> untyped
+
+        %a{pure}
+        def inline_value: () -> untyped
+
+        %a{pure}
+        def inlay_hint: () -> untyped
+
+        %a{pure}
+        def diagnostic: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_document_content_change_event.rbs b/sig/language_server/protocol/interface/text_document_content_change_event.rbs
index 75c36e3..46d7b0d 100644
--- a/sig/language_server/protocol/interface/text_document_content_change_event.rbs
+++ b/sig/language_server/protocol/interface/text_document_content_change_event.rbs
@@ -11,6 +11,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def range_length: () -> Integer?
+
+        %a{pure}
+        def text: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_document_edit.rbs b/sig/language_server/protocol/interface/text_document_edit.rbs
index 7c3514f..fadda6d 100644
--- a/sig/language_server/protocol/interface/text_document_edit.rbs
+++ b/sig/language_server/protocol/interface/text_document_edit.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def edits: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_document_identifier.rbs b/sig/language_server/protocol/interface/text_document_identifier.rbs
index 08a0596..3a37da7 100644
--- a/sig/language_server/protocol/interface/text_document_identifier.rbs
+++ b/sig/language_server/protocol/interface/text_document_identifier.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_document_item.rbs b/sig/language_server/protocol/interface/text_document_item.rbs
index 6bcd4c4..e140880 100644
--- a/sig/language_server/protocol/interface/text_document_item.rbs
+++ b/sig/language_server/protocol/interface/text_document_item.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def language_id: () -> String
+
+        %a{pure}
+        def version: () -> Integer
+
+        %a{pure}
+        def text: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_document_position_params.rbs b/sig/language_server/protocol/interface/text_document_position_params.rbs
index a683461..995a56b 100644
--- a/sig/language_server/protocol/interface/text_document_position_params.rbs
+++ b/sig/language_server/protocol/interface/text_document_position_params.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_document_registration_options.rbs b/sig/language_server/protocol/interface/text_document_registration_options.rbs
index afaa4e0..1592a02 100644
--- a/sig/language_server/protocol/interface/text_document_registration_options.rbs
+++ b/sig/language_server/protocol/interface/text_document_registration_options.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_document_save_registration_options.rbs b/sig/language_server/protocol/interface/text_document_save_registration_options.rbs
index 05e8476..8f4e633 100644
--- a/sig/language_server/protocol/interface/text_document_save_registration_options.rbs
+++ b/sig/language_server/protocol/interface/text_document_save_registration_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def include_text: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_document_sync_client_capabilities.rbs b/sig/language_server/protocol/interface/text_document_sync_client_capabilities.rbs
index 8d39da3..9d9b299 100644
--- a/sig/language_server/protocol/interface/text_document_sync_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/text_document_sync_client_capabilities.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def will_save: () -> bool?
+
+        %a{pure}
+        def will_save_wait_until: () -> bool?
+
+        %a{pure}
+        def did_save: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_document_sync_options.rbs b/sig/language_server/protocol/interface/text_document_sync_options.rbs
index a450df7..2ae4467 100644
--- a/sig/language_server/protocol/interface/text_document_sync_options.rbs
+++ b/sig/language_server/protocol/interface/text_document_sync_options.rbs
@@ -7,6 +7,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def open_close: () -> bool?
+
+        %a{pure}
+        def change: () -> untyped
+
+        %a{pure}
+        def will_save: () -> bool?
+
+        %a{pure}
+        def will_save_wait_until: () -> bool?
+
+        %a{pure}
+        def save: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/text_edit.rbs b/sig/language_server/protocol/interface/text_edit.rbs
index 5020d12..1e0648b 100644
--- a/sig/language_server/protocol/interface/text_edit.rbs
+++ b/sig/language_server/protocol/interface/text_edit.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def new_text: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/type_definition_client_capabilities.rbs b/sig/language_server/protocol/interface/type_definition_client_capabilities.rbs
index 96e7c0f..f42362b 100644
--- a/sig/language_server/protocol/interface/type_definition_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/type_definition_client_capabilities.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def link_support: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/type_definition_options.rbs b/sig/language_server/protocol/interface/type_definition_options.rbs
index 976011b..b43609d 100644
--- a/sig/language_server/protocol/interface/type_definition_options.rbs
+++ b/sig/language_server/protocol/interface/type_definition_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/type_definition_params.rbs b/sig/language_server/protocol/interface/type_definition_params.rbs
index 64a635a..58dc179 100644
--- a/sig/language_server/protocol/interface/type_definition_params.rbs
+++ b/sig/language_server/protocol/interface/type_definition_params.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/type_definition_registration_options.rbs b/sig/language_server/protocol/interface/type_definition_registration_options.rbs
index c0505fd..b15d417 100644
--- a/sig/language_server/protocol/interface/type_definition_registration_options.rbs
+++ b/sig/language_server/protocol/interface/type_definition_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/type_hierarchy_item.rbs b/sig/language_server/protocol/interface/type_hierarchy_item.rbs
index 67252f5..3445a70 100644
--- a/sig/language_server/protocol/interface/type_hierarchy_item.rbs
+++ b/sig/language_server/protocol/interface/type_hierarchy_item.rbs
@@ -7,6 +7,30 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def name: () -> String
+
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def tags: () -> Array[untyped]?
+
+        %a{pure}
+        def detail: () -> String?
+
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def range: () -> untyped
+
+        %a{pure}
+        def selection_range: () -> untyped
+
+        %a{pure}
+        def data: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/type_hierarchy_options.rbs b/sig/language_server/protocol/interface/type_hierarchy_options.rbs
index 1964e1a..444badf 100644
--- a/sig/language_server/protocol/interface/type_hierarchy_options.rbs
+++ b/sig/language_server/protocol/interface/type_hierarchy_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/type_hierarchy_prepare_params.rbs b/sig/language_server/protocol/interface/type_hierarchy_prepare_params.rbs
index 8cae168..62472b2 100644
--- a/sig/language_server/protocol/interface/type_hierarchy_prepare_params.rbs
+++ b/sig/language_server/protocol/interface/type_hierarchy_prepare_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def position: () -> untyped
+
+        %a{pure}
+        def work_done_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/type_hierarchy_registration_options.rbs b/sig/language_server/protocol/interface/type_hierarchy_registration_options.rbs
index aa060c6..85410d7 100644
--- a/sig/language_server/protocol/interface/type_hierarchy_registration_options.rbs
+++ b/sig/language_server/protocol/interface/type_hierarchy_registration_options.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_selector: () -> untyped
+
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def id: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/type_hierarchy_subtypes_params.rbs b/sig/language_server/protocol/interface/type_hierarchy_subtypes_params.rbs
index 868e437..f7e2637 100644
--- a/sig/language_server/protocol/interface/type_hierarchy_subtypes_params.rbs
+++ b/sig/language_server/protocol/interface/type_hierarchy_subtypes_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def item: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/type_hierarchy_supertypes_params.rbs b/sig/language_server/protocol/interface/type_hierarchy_supertypes_params.rbs
index d7fb115..ebad996 100644
--- a/sig/language_server/protocol/interface/type_hierarchy_supertypes_params.rbs
+++ b/sig/language_server/protocol/interface/type_hierarchy_supertypes_params.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def item: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/unchanged_document_diagnostic_report.rbs b/sig/language_server/protocol/interface/unchanged_document_diagnostic_report.rbs
index 843bd7c..04c2fcf 100644
--- a/sig/language_server/protocol/interface/unchanged_document_diagnostic_report.rbs
+++ b/sig/language_server/protocol/interface/unchanged_document_diagnostic_report.rbs
@@ -11,6 +11,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def result_id: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/unregistration.rbs b/sig/language_server/protocol/interface/unregistration.rbs
index 32feb60..b2eee7e 100644
--- a/sig/language_server/protocol/interface/unregistration.rbs
+++ b/sig/language_server/protocol/interface/unregistration.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def id: () -> String
+
+        %a{pure}
+        def method: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/unregistration_params.rbs b/sig/language_server/protocol/interface/unregistration_params.rbs
index 87957e0..5506293 100644
--- a/sig/language_server/protocol/interface/unregistration_params.rbs
+++ b/sig/language_server/protocol/interface/unregistration_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def unregisterations: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/versioned_notebook_document_identifier.rbs b/sig/language_server/protocol/interface/versioned_notebook_document_identifier.rbs
index b6ca082..b23d360 100644
--- a/sig/language_server/protocol/interface/versioned_notebook_document_identifier.rbs
+++ b/sig/language_server/protocol/interface/versioned_notebook_document_identifier.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def version: () -> Integer
+
+        %a{pure}
+        def uri: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/versioned_text_document_identifier.rbs b/sig/language_server/protocol/interface/versioned_text_document_identifier.rbs
index 399fd5e..e2cfeba 100644
--- a/sig/language_server/protocol/interface/versioned_text_document_identifier.rbs
+++ b/sig/language_server/protocol/interface/versioned_text_document_identifier.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def version: () -> Integer
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/will_save_text_document_params.rbs b/sig/language_server/protocol/interface/will_save_text_document_params.rbs
index 12249c1..3b2e03e 100644
--- a/sig/language_server/protocol/interface/will_save_text_document_params.rbs
+++ b/sig/language_server/protocol/interface/will_save_text_document_params.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def text_document: () -> untyped
+
+        %a{pure}
+        def reason: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/work_done_progress_begin.rbs b/sig/language_server/protocol/interface/work_done_progress_begin.rbs
index d313261..a2d0f2a 100644
--- a/sig/language_server/protocol/interface/work_done_progress_begin.rbs
+++ b/sig/language_server/protocol/interface/work_done_progress_begin.rbs
@@ -7,6 +7,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def title: () -> String
+
+        %a{pure}
+        def cancellable: () -> bool?
+
+        %a{pure}
+        def message: () -> String?
+
+        %a{pure}
+        def percentage: () -> Integer?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/work_done_progress_cancel_params.rbs b/sig/language_server/protocol/interface/work_done_progress_cancel_params.rbs
index ebc8bd1..0ee9fe6 100644
--- a/sig/language_server/protocol/interface/work_done_progress_cancel_params.rbs
+++ b/sig/language_server/protocol/interface/work_done_progress_cancel_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/work_done_progress_create_params.rbs b/sig/language_server/protocol/interface/work_done_progress_create_params.rbs
index 76068ba..8804bcf 100644
--- a/sig/language_server/protocol/interface/work_done_progress_create_params.rbs
+++ b/sig/language_server/protocol/interface/work_done_progress_create_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/work_done_progress_end.rbs b/sig/language_server/protocol/interface/work_done_progress_end.rbs
index 6fcdba4..17a1797 100644
--- a/sig/language_server/protocol/interface/work_done_progress_end.rbs
+++ b/sig/language_server/protocol/interface/work_done_progress_end.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def message: () -> String?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/work_done_progress_options.rbs b/sig/language_server/protocol/interface/work_done_progress_options.rbs
index 9661a0c..7b489d1 100644
--- a/sig/language_server/protocol/interface/work_done_progress_options.rbs
+++ b/sig/language_server/protocol/interface/work_done_progress_options.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/work_done_progress_params.rbs b/sig/language_server/protocol/interface/work_done_progress_params.rbs
index b0a3ce4..ede3dac 100644
--- a/sig/language_server/protocol/interface/work_done_progress_params.rbs
+++ b/sig/language_server/protocol/interface/work_done_progress_params.rbs
@@ -7,6 +7,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/work_done_progress_report.rbs b/sig/language_server/protocol/interface/work_done_progress_report.rbs
index b575d90..e8d8929 100644
--- a/sig/language_server/protocol/interface/work_done_progress_report.rbs
+++ b/sig/language_server/protocol/interface/work_done_progress_report.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def cancellable: () -> bool?
+
+        %a{pure}
+        def message: () -> String?
+
+        %a{pure}
+        def percentage: () -> Integer?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_diagnostic_params.rbs b/sig/language_server/protocol/interface/workspace_diagnostic_params.rbs
index a749fe9..b889244 100644
--- a/sig/language_server/protocol/interface/workspace_diagnostic_params.rbs
+++ b/sig/language_server/protocol/interface/workspace_diagnostic_params.rbs
@@ -10,6 +10,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def identifier: () -> String?
+
+        %a{pure}
+        def previous_result_ids: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_diagnostic_report.rbs b/sig/language_server/protocol/interface/workspace_diagnostic_report.rbs
index 2520e23..d45e6a0 100644
--- a/sig/language_server/protocol/interface/workspace_diagnostic_report.rbs
+++ b/sig/language_server/protocol/interface/workspace_diagnostic_report.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def items: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_diagnostic_report_partial_result.rbs b/sig/language_server/protocol/interface/workspace_diagnostic_report_partial_result.rbs
index 7084775..11db7cf 100644
--- a/sig/language_server/protocol/interface/workspace_diagnostic_report_partial_result.rbs
+++ b/sig/language_server/protocol/interface/workspace_diagnostic_report_partial_result.rbs
@@ -10,6 +10,9 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def items: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_edit.rbs b/sig/language_server/protocol/interface/workspace_edit.rbs
index df7f88c..1688b77 100644
--- a/sig/language_server/protocol/interface/workspace_edit.rbs
+++ b/sig/language_server/protocol/interface/workspace_edit.rbs
@@ -7,6 +7,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def changes: () -> untyped
+
+        %a{pure}
+        def document_changes: () -> Array[untyped]?
+
+        %a{pure}
+        def change_annotations: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_edit_client_capabilities.rbs b/sig/language_server/protocol/interface/workspace_edit_client_capabilities.rbs
index 409b30e..99256ce 100644
--- a/sig/language_server/protocol/interface/workspace_edit_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/workspace_edit_client_capabilities.rbs
@@ -7,6 +7,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def document_changes: () -> bool?
+
+        %a{pure}
+        def resource_operations: () -> Array[untyped]?
+
+        %a{pure}
+        def failure_handling: () -> untyped
+
+        %a{pure}
+        def normalizes_line_endings: () -> bool?
+
+        %a{pure}
+        def change_annotation_support: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_folder.rbs b/sig/language_server/protocol/interface/workspace_folder.rbs
index 5adfff8..8d06acd 100644
--- a/sig/language_server/protocol/interface/workspace_folder.rbs
+++ b/sig/language_server/protocol/interface/workspace_folder.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def name: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_folders_change_event.rbs b/sig/language_server/protocol/interface/workspace_folders_change_event.rbs
index 73df771..093107d 100644
--- a/sig/language_server/protocol/interface/workspace_folders_change_event.rbs
+++ b/sig/language_server/protocol/interface/workspace_folders_change_event.rbs
@@ -10,6 +10,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def added: () -> Array[untyped]
+
+        %a{pure}
+        def removed: () -> Array[untyped]
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_folders_server_capabilities.rbs b/sig/language_server/protocol/interface/workspace_folders_server_capabilities.rbs
index 2797e75..7112dcc 100644
--- a/sig/language_server/protocol/interface/workspace_folders_server_capabilities.rbs
+++ b/sig/language_server/protocol/interface/workspace_folders_server_capabilities.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def supported: () -> bool?
+
+        %a{pure}
+        def change_notifications: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_full_document_diagnostic_report.rbs b/sig/language_server/protocol/interface/workspace_full_document_diagnostic_report.rbs
index 42bd28d..b624b83 100644
--- a/sig/language_server/protocol/interface/workspace_full_document_diagnostic_report.rbs
+++ b/sig/language_server/protocol/interface/workspace_full_document_diagnostic_report.rbs
@@ -10,6 +10,21 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def result_id: () -> String?
+
+        %a{pure}
+        def items: () -> Array[untyped]
+
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def version: () -> Integer
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_symbol.rbs b/sig/language_server/protocol/interface/workspace_symbol.rbs
index eccff6b..3b18adf 100644
--- a/sig/language_server/protocol/interface/workspace_symbol.rbs
+++ b/sig/language_server/protocol/interface/workspace_symbol.rbs
@@ -10,6 +10,24 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def name: () -> String
+
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def tags: () -> Array[untyped]?
+
+        %a{pure}
+        def container_name: () -> String?
+
+        %a{pure}
+        def location: () -> untyped
+
+        %a{pure}
+        def data: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_symbol_client_capabilities.rbs b/sig/language_server/protocol/interface/workspace_symbol_client_capabilities.rbs
index f53967b..28e958d 100644
--- a/sig/language_server/protocol/interface/workspace_symbol_client_capabilities.rbs
+++ b/sig/language_server/protocol/interface/workspace_symbol_client_capabilities.rbs
@@ -7,6 +7,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def dynamic_registration: () -> bool?
+
+        %a{pure}
+        def symbol_kind: () -> untyped
+
+        %a{pure}
+        def tag_support: () -> untyped
+
+        %a{pure}
+        def resolve_support: () -> untyped
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_symbol_options.rbs b/sig/language_server/protocol/interface/workspace_symbol_options.rbs
index ff55652..ed09692 100644
--- a/sig/language_server/protocol/interface/workspace_symbol_options.rbs
+++ b/sig/language_server/protocol/interface/workspace_symbol_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_symbol_params.rbs b/sig/language_server/protocol/interface/workspace_symbol_params.rbs
index ecac75a..716b341 100644
--- a/sig/language_server/protocol/interface/workspace_symbol_params.rbs
+++ b/sig/language_server/protocol/interface/workspace_symbol_params.rbs
@@ -10,6 +10,15 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_token: () -> untyped
+
+        %a{pure}
+        def partial_result_token: () -> untyped
+
+        %a{pure}
+        def query: () -> String
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_symbol_registration_options.rbs b/sig/language_server/protocol/interface/workspace_symbol_registration_options.rbs
index 4c6310f..32b2e1f 100644
--- a/sig/language_server/protocol/interface/workspace_symbol_registration_options.rbs
+++ b/sig/language_server/protocol/interface/workspace_symbol_registration_options.rbs
@@ -7,6 +7,12 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def work_done_progress: () -> bool?
+
+        %a{pure}
+        def resolve_provider: () -> bool?
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String
diff --git a/sig/language_server/protocol/interface/workspace_unchanged_document_diagnostic_report.rbs b/sig/language_server/protocol/interface/workspace_unchanged_document_diagnostic_report.rbs
index 1813d57..b46d9dc 100644
--- a/sig/language_server/protocol/interface/workspace_unchanged_document_diagnostic_report.rbs
+++ b/sig/language_server/protocol/interface/workspace_unchanged_document_diagnostic_report.rbs
@@ -10,6 +10,18 @@ module LanguageServer
         @attributes: Hash[Symbol, untyped]
         attr_reader attributes: Hash[Symbol, untyped]
 
+        %a{pure}
+        def kind: () -> untyped
+
+        %a{pure}
+        def result_id: () -> String
+
+        %a{pure}
+        def uri: () -> String
+
+        %a{pure}
+        def version: () -> Integer
+
         def to_hash: () -> Hash[Symbol, untyped]
 
         def to_json: (*untyped) -> String