Change all predicate methods

Author: Kevin Kirsche

elasticsearch-api/lib/elasticsearch/api/actions/exists.rb

@@ -6,7 +6,7 @@ module Actions
       #
       # @example
       #
-      #     client.exists index: 'myindex', type: 'mytype', id: '1'
+      #     client.exists? index: 'myindex', type: 'mytype', id: '1'
       #
       # @option arguments [String] :id The document ID (*Required*)
       # @option arguments [String] :index The name of the index (*Required*)
@@ -20,7 +20,7 @@ module Actions
       #
       # @see http://elasticsearch.org/guide/reference/api/get/
       #
-      def exists(arguments={})
+      def exists?(arguments={})
         raise ArgumentError, "Required argument 'id' missing"    unless arguments[:id]
         raise ArgumentError, "Required argument 'index' missing" unless arguments[:index]
         arguments[:type] ||= UNDERSCORE_ALL

elasticsearch-api/lib/elasticsearch/api/actions/indices/exists_alias.rb

@@ -7,7 +7,7 @@ module Actions
         #
         # @example Check whether index alias named _myalias_ exists
         #
-        #     client.indices.exists_alias name: 'myalias'
+        #     client.indices.exists_alias? name: 'myalias'
         #
         # @option arguments [List] :index A comma-separated list of index names to filter aliases
         # @option arguments [List] :name A comma-separated list of alias names to return
@@ -25,7 +25,7 @@ module Actions
         #
         # @see http://www.elasticsearch.org/guide/reference/api/admin-indices-aliases/
         #
-        def exists_alias(arguments={})
+        def exists_alias?(arguments={})
           valid_params = [
             :ignore_indices,
             :ignore_unavailable,

elasticsearch-api/lib/elasticsearch/api/actions/indices/exists_type.rb

@@ -22,7 +22,7 @@ module Actions
         #
         # @see http://www.elasticsearch.org/guide/reference/api/admin-indices-types-exists/
         #
-        def exists_type(arguments={})
+        def exists_type?(arguments={})
           raise ArgumentError, "Required argument 'index' missing" unless arguments[:index]
           raise ArgumentError, "Required argument 'type' missing" unless arguments[:type]
           valid_params = [