diff --git a/benchmark/built_value_loop_0100/lib/app.dart b/benchmark/built_value_loop_0100/lib/app.dart
new file mode 100644
index 000000000..9458f60b0
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/app.dart
@@ -0,0 +1,2 @@
+/// ignore_for_file: unused_import
+/// CACHEBUSTER
diff --git a/benchmark/built_value_loop_0100/lib/lib001.dart b/benchmark/built_value_loop_0100/lib/lib001.dart
new file mode 100644
index 000000000..154d89783
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib001.dart
@@ -0,0 +1,12 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'app.dart';
+import 'lib100.dart';
+
+part 'lib001.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib002.dart b/benchmark/built_value_loop_0100/lib/lib002.dart
new file mode 100644
index 000000000..9026a0656
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib002.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib001.dart';
+
+part 'lib002.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib003.dart b/benchmark/built_value_loop_0100/lib/lib003.dart
new file mode 100644
index 000000000..1349f2cc5
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib003.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib002.dart';
+
+part 'lib003.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib004.dart b/benchmark/built_value_loop_0100/lib/lib004.dart
new file mode 100644
index 000000000..7e61ea729
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib004.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib003.dart';
+
+part 'lib004.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib005.dart b/benchmark/built_value_loop_0100/lib/lib005.dart
new file mode 100644
index 000000000..d751bf574
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib005.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib004.dart';
+
+part 'lib005.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib006.dart b/benchmark/built_value_loop_0100/lib/lib006.dart
new file mode 100644
index 000000000..84e196e3c
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib006.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib005.dart';
+
+part 'lib006.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib007.dart b/benchmark/built_value_loop_0100/lib/lib007.dart
new file mode 100644
index 000000000..83cea9f2a
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib007.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib006.dart';
+
+part 'lib007.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib008.dart b/benchmark/built_value_loop_0100/lib/lib008.dart
new file mode 100644
index 000000000..d4040e093
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib008.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib007.dart';
+
+part 'lib008.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib009.dart b/benchmark/built_value_loop_0100/lib/lib009.dart
new file mode 100644
index 000000000..41627ba1c
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib009.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib008.dart';
+
+part 'lib009.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib010.dart b/benchmark/built_value_loop_0100/lib/lib010.dart
new file mode 100644
index 000000000..308a8b31b
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib010.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib009.dart';
+
+part 'lib010.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib011.dart b/benchmark/built_value_loop_0100/lib/lib011.dart
new file mode 100644
index 000000000..31d3330d4
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib011.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib010.dart';
+
+part 'lib011.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib012.dart b/benchmark/built_value_loop_0100/lib/lib012.dart
new file mode 100644
index 000000000..d4cda004b
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib012.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib011.dart';
+
+part 'lib012.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib013.dart b/benchmark/built_value_loop_0100/lib/lib013.dart
new file mode 100644
index 000000000..6d28e357f
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib013.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib012.dart';
+
+part 'lib013.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib014.dart b/benchmark/built_value_loop_0100/lib/lib014.dart
new file mode 100644
index 000000000..9b8589c96
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib014.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib013.dart';
+
+part 'lib014.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib015.dart b/benchmark/built_value_loop_0100/lib/lib015.dart
new file mode 100644
index 000000000..0ef8dcb45
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib015.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib014.dart';
+
+part 'lib015.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib016.dart b/benchmark/built_value_loop_0100/lib/lib016.dart
new file mode 100644
index 000000000..65653ddf6
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib016.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib015.dart';
+
+part 'lib016.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib017.dart b/benchmark/built_value_loop_0100/lib/lib017.dart
new file mode 100644
index 000000000..756e9ce44
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib017.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib016.dart';
+
+part 'lib017.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib018.dart b/benchmark/built_value_loop_0100/lib/lib018.dart
new file mode 100644
index 000000000..bc309632e
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib018.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib017.dart';
+
+part 'lib018.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib019.dart b/benchmark/built_value_loop_0100/lib/lib019.dart
new file mode 100644
index 000000000..489a41488
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib019.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib018.dart';
+
+part 'lib019.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib020.dart b/benchmark/built_value_loop_0100/lib/lib020.dart
new file mode 100644
index 000000000..e5e979c5c
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib020.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib019.dart';
+
+part 'lib020.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib021.dart b/benchmark/built_value_loop_0100/lib/lib021.dart
new file mode 100644
index 000000000..8caab0cf7
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib021.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib020.dart';
+
+part 'lib021.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib022.dart b/benchmark/built_value_loop_0100/lib/lib022.dart
new file mode 100644
index 000000000..3cb674c11
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib022.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib021.dart';
+
+part 'lib022.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib023.dart b/benchmark/built_value_loop_0100/lib/lib023.dart
new file mode 100644
index 000000000..67f16ea45
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib023.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib022.dart';
+
+part 'lib023.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib024.dart b/benchmark/built_value_loop_0100/lib/lib024.dart
new file mode 100644
index 000000000..db524195d
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib024.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib023.dart';
+
+part 'lib024.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib025.dart b/benchmark/built_value_loop_0100/lib/lib025.dart
new file mode 100644
index 000000000..2c7ce499a
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib025.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib024.dart';
+
+part 'lib025.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib026.dart b/benchmark/built_value_loop_0100/lib/lib026.dart
new file mode 100644
index 000000000..4303b7e13
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib026.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib025.dart';
+
+part 'lib026.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib027.dart b/benchmark/built_value_loop_0100/lib/lib027.dart
new file mode 100644
index 000000000..b15621627
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib027.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib026.dart';
+
+part 'lib027.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib028.dart b/benchmark/built_value_loop_0100/lib/lib028.dart
new file mode 100644
index 000000000..0f6e822d1
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib028.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib027.dart';
+
+part 'lib028.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib029.dart b/benchmark/built_value_loop_0100/lib/lib029.dart
new file mode 100644
index 000000000..a4a522edf
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib029.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib028.dart';
+
+part 'lib029.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib030.dart b/benchmark/built_value_loop_0100/lib/lib030.dart
new file mode 100644
index 000000000..be732a07d
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib030.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib029.dart';
+
+part 'lib030.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib031.dart b/benchmark/built_value_loop_0100/lib/lib031.dart
new file mode 100644
index 000000000..a7d028530
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib031.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib030.dart';
+
+part 'lib031.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib032.dart b/benchmark/built_value_loop_0100/lib/lib032.dart
new file mode 100644
index 000000000..2a218d733
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib032.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib031.dart';
+
+part 'lib032.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib033.dart b/benchmark/built_value_loop_0100/lib/lib033.dart
new file mode 100644
index 000000000..f3de241fd
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib033.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib032.dart';
+
+part 'lib033.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib034.dart b/benchmark/built_value_loop_0100/lib/lib034.dart
new file mode 100644
index 000000000..ece871100
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib034.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib033.dart';
+
+part 'lib034.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib035.dart b/benchmark/built_value_loop_0100/lib/lib035.dart
new file mode 100644
index 000000000..3f3240243
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib035.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib034.dart';
+
+part 'lib035.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib036.dart b/benchmark/built_value_loop_0100/lib/lib036.dart
new file mode 100644
index 000000000..df51065d9
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib036.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib035.dart';
+
+part 'lib036.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib037.dart b/benchmark/built_value_loop_0100/lib/lib037.dart
new file mode 100644
index 000000000..f1a73694e
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib037.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib036.dart';
+
+part 'lib037.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib038.dart b/benchmark/built_value_loop_0100/lib/lib038.dart
new file mode 100644
index 000000000..fb16e360b
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib038.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib037.dart';
+
+part 'lib038.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib039.dart b/benchmark/built_value_loop_0100/lib/lib039.dart
new file mode 100644
index 000000000..4ebc62665
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib039.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib038.dart';
+
+part 'lib039.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib040.dart b/benchmark/built_value_loop_0100/lib/lib040.dart
new file mode 100644
index 000000000..3b4b7b28b
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib040.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib039.dart';
+
+part 'lib040.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib041.dart b/benchmark/built_value_loop_0100/lib/lib041.dart
new file mode 100644
index 000000000..16cabbc6e
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib041.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib040.dart';
+
+part 'lib041.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib042.dart b/benchmark/built_value_loop_0100/lib/lib042.dart
new file mode 100644
index 000000000..0a89cb1b3
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib042.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib041.dart';
+
+part 'lib042.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib043.dart b/benchmark/built_value_loop_0100/lib/lib043.dart
new file mode 100644
index 000000000..501337f5c
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib043.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib042.dart';
+
+part 'lib043.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib044.dart b/benchmark/built_value_loop_0100/lib/lib044.dart
new file mode 100644
index 000000000..4e3f0e8cd
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib044.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib043.dart';
+
+part 'lib044.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib045.dart b/benchmark/built_value_loop_0100/lib/lib045.dart
new file mode 100644
index 000000000..d9a5e935d
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib045.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib044.dart';
+
+part 'lib045.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib046.dart b/benchmark/built_value_loop_0100/lib/lib046.dart
new file mode 100644
index 000000000..f9dbad5ba
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib046.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib045.dart';
+
+part 'lib046.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib047.dart b/benchmark/built_value_loop_0100/lib/lib047.dart
new file mode 100644
index 000000000..061df3432
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib047.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib046.dart';
+
+part 'lib047.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib048.dart b/benchmark/built_value_loop_0100/lib/lib048.dart
new file mode 100644
index 000000000..9cdd334f4
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib048.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib047.dart';
+
+part 'lib048.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib049.dart b/benchmark/built_value_loop_0100/lib/lib049.dart
new file mode 100644
index 000000000..95052d95e
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib049.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib048.dart';
+
+part 'lib049.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib050.dart b/benchmark/built_value_loop_0100/lib/lib050.dart
new file mode 100644
index 000000000..b580d8b8b
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib050.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib049.dart';
+
+part 'lib050.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib051.dart b/benchmark/built_value_loop_0100/lib/lib051.dart
new file mode 100644
index 000000000..b006364f3
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib051.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib050.dart';
+
+part 'lib051.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib052.dart b/benchmark/built_value_loop_0100/lib/lib052.dart
new file mode 100644
index 000000000..1f76abe06
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib052.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib051.dart';
+
+part 'lib052.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib053.dart b/benchmark/built_value_loop_0100/lib/lib053.dart
new file mode 100644
index 000000000..c7e1cd9a7
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib053.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib052.dart';
+
+part 'lib053.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib054.dart b/benchmark/built_value_loop_0100/lib/lib054.dart
new file mode 100644
index 000000000..b47165c44
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib054.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib053.dart';
+
+part 'lib054.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib055.dart b/benchmark/built_value_loop_0100/lib/lib055.dart
new file mode 100644
index 000000000..ed0e69976
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib055.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib054.dart';
+
+part 'lib055.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib056.dart b/benchmark/built_value_loop_0100/lib/lib056.dart
new file mode 100644
index 000000000..c652d0067
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib056.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib055.dart';
+
+part 'lib056.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib057.dart b/benchmark/built_value_loop_0100/lib/lib057.dart
new file mode 100644
index 000000000..ebeb18952
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib057.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib056.dart';
+
+part 'lib057.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib058.dart b/benchmark/built_value_loop_0100/lib/lib058.dart
new file mode 100644
index 000000000..16835739d
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib058.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib057.dart';
+
+part 'lib058.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib059.dart b/benchmark/built_value_loop_0100/lib/lib059.dart
new file mode 100644
index 000000000..37d3aff13
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib059.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib058.dart';
+
+part 'lib059.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib060.dart b/benchmark/built_value_loop_0100/lib/lib060.dart
new file mode 100644
index 000000000..ac994234c
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib060.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib059.dart';
+
+part 'lib060.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib061.dart b/benchmark/built_value_loop_0100/lib/lib061.dart
new file mode 100644
index 000000000..d6841e628
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib061.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib060.dart';
+
+part 'lib061.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib062.dart b/benchmark/built_value_loop_0100/lib/lib062.dart
new file mode 100644
index 000000000..1d21188a2
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib062.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib061.dart';
+
+part 'lib062.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib063.dart b/benchmark/built_value_loop_0100/lib/lib063.dart
new file mode 100644
index 000000000..8eac31339
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib063.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib062.dart';
+
+part 'lib063.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib064.dart b/benchmark/built_value_loop_0100/lib/lib064.dart
new file mode 100644
index 000000000..d07003256
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib064.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib063.dart';
+
+part 'lib064.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib065.dart b/benchmark/built_value_loop_0100/lib/lib065.dart
new file mode 100644
index 000000000..d2d4a1e06
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib065.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib064.dart';
+
+part 'lib065.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib066.dart b/benchmark/built_value_loop_0100/lib/lib066.dart
new file mode 100644
index 000000000..151f5ae2d
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib066.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib065.dart';
+
+part 'lib066.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib067.dart b/benchmark/built_value_loop_0100/lib/lib067.dart
new file mode 100644
index 000000000..38a543bd6
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib067.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib066.dart';
+
+part 'lib067.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib068.dart b/benchmark/built_value_loop_0100/lib/lib068.dart
new file mode 100644
index 000000000..1458a82ee
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib068.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib067.dart';
+
+part 'lib068.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib069.dart b/benchmark/built_value_loop_0100/lib/lib069.dart
new file mode 100644
index 000000000..fe77d022d
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib069.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib068.dart';
+
+part 'lib069.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib070.dart b/benchmark/built_value_loop_0100/lib/lib070.dart
new file mode 100644
index 000000000..6afe8fbef
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib070.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib069.dart';
+
+part 'lib070.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib071.dart b/benchmark/built_value_loop_0100/lib/lib071.dart
new file mode 100644
index 000000000..72d6e5673
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib071.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib070.dart';
+
+part 'lib071.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib072.dart b/benchmark/built_value_loop_0100/lib/lib072.dart
new file mode 100644
index 000000000..1f7948a0a
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib072.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib071.dart';
+
+part 'lib072.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib073.dart b/benchmark/built_value_loop_0100/lib/lib073.dart
new file mode 100644
index 000000000..e73561a5a
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib073.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib072.dart';
+
+part 'lib073.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib074.dart b/benchmark/built_value_loop_0100/lib/lib074.dart
new file mode 100644
index 000000000..d81e3da02
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib074.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib073.dart';
+
+part 'lib074.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib075.dart b/benchmark/built_value_loop_0100/lib/lib075.dart
new file mode 100644
index 000000000..e9ae036a0
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib075.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib074.dart';
+
+part 'lib075.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib076.dart b/benchmark/built_value_loop_0100/lib/lib076.dart
new file mode 100644
index 000000000..da571a706
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib076.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib075.dart';
+
+part 'lib076.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib077.dart b/benchmark/built_value_loop_0100/lib/lib077.dart
new file mode 100644
index 000000000..93ec45b60
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib077.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib076.dart';
+
+part 'lib077.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib078.dart b/benchmark/built_value_loop_0100/lib/lib078.dart
new file mode 100644
index 000000000..1baaca78b
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib078.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib077.dart';
+
+part 'lib078.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib079.dart b/benchmark/built_value_loop_0100/lib/lib079.dart
new file mode 100644
index 000000000..832290d94
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib079.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib078.dart';
+
+part 'lib079.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib080.dart b/benchmark/built_value_loop_0100/lib/lib080.dart
new file mode 100644
index 000000000..e6009469c
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib080.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib079.dart';
+
+part 'lib080.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib081.dart b/benchmark/built_value_loop_0100/lib/lib081.dart
new file mode 100644
index 000000000..3b306fab6
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib081.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib080.dart';
+
+part 'lib081.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib082.dart b/benchmark/built_value_loop_0100/lib/lib082.dart
new file mode 100644
index 000000000..c2171b083
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib082.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib081.dart';
+
+part 'lib082.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib083.dart b/benchmark/built_value_loop_0100/lib/lib083.dart
new file mode 100644
index 000000000..c57395225
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib083.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib082.dart';
+
+part 'lib083.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib084.dart b/benchmark/built_value_loop_0100/lib/lib084.dart
new file mode 100644
index 000000000..a1edf2ed3
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib084.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib083.dart';
+
+part 'lib084.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib085.dart b/benchmark/built_value_loop_0100/lib/lib085.dart
new file mode 100644
index 000000000..d63ec9124
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib085.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib084.dart';
+
+part 'lib085.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib086.dart b/benchmark/built_value_loop_0100/lib/lib086.dart
new file mode 100644
index 000000000..daf302174
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib086.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib085.dart';
+
+part 'lib086.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib087.dart b/benchmark/built_value_loop_0100/lib/lib087.dart
new file mode 100644
index 000000000..062fbb938
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib087.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib086.dart';
+
+part 'lib087.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib088.dart b/benchmark/built_value_loop_0100/lib/lib088.dart
new file mode 100644
index 000000000..c213ad91f
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib088.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib087.dart';
+
+part 'lib088.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib089.dart b/benchmark/built_value_loop_0100/lib/lib089.dart
new file mode 100644
index 000000000..3d07dcf7e
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib089.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib088.dart';
+
+part 'lib089.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib090.dart b/benchmark/built_value_loop_0100/lib/lib090.dart
new file mode 100644
index 000000000..f40d3a0d2
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib090.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib089.dart';
+
+part 'lib090.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib091.dart b/benchmark/built_value_loop_0100/lib/lib091.dart
new file mode 100644
index 000000000..93379b8b2
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib091.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib090.dart';
+
+part 'lib091.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib092.dart b/benchmark/built_value_loop_0100/lib/lib092.dart
new file mode 100644
index 000000000..cfcd05f2f
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib092.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib091.dart';
+
+part 'lib092.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib093.dart b/benchmark/built_value_loop_0100/lib/lib093.dart
new file mode 100644
index 000000000..6bf16ee44
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib093.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib092.dart';
+
+part 'lib093.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib094.dart b/benchmark/built_value_loop_0100/lib/lib094.dart
new file mode 100644
index 000000000..61db92ef9
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib094.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib093.dart';
+
+part 'lib094.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib095.dart b/benchmark/built_value_loop_0100/lib/lib095.dart
new file mode 100644
index 000000000..425b9a965
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib095.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib094.dart';
+
+part 'lib095.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib096.dart b/benchmark/built_value_loop_0100/lib/lib096.dart
new file mode 100644
index 000000000..09986aec8
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib096.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib095.dart';
+
+part 'lib096.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib097.dart b/benchmark/built_value_loop_0100/lib/lib097.dart
new file mode 100644
index 000000000..24b35b59c
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib097.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib096.dart';
+
+part 'lib097.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib098.dart b/benchmark/built_value_loop_0100/lib/lib098.dart
new file mode 100644
index 000000000..d50625dd9
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib098.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib097.dart';
+
+part 'lib098.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib099.dart b/benchmark/built_value_loop_0100/lib/lib099.dart
new file mode 100644
index 000000000..a4431069b
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib099.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib098.dart';
+
+part 'lib099.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/lib/lib100.dart b/benchmark/built_value_loop_0100/lib/lib100.dart
new file mode 100644
index 000000000..9938286bc
--- /dev/null
+++ b/benchmark/built_value_loop_0100/lib/lib100.dart
@@ -0,0 +1,11 @@
+// ignore_for_file: unused_import
+import 'package:built_value/built_value.dart';
+
+import 'lib099.dart';
+
+part 'lib100.g.dart';
+
+abstract class Value implements Built<Value, ValueBuilder> {
+  Value._();
+  factory Value(void Function(ValueBuilder) updates) = _$Value;
+}
diff --git a/benchmark/built_value_loop_0100/pubspec.yaml b/benchmark/built_value_loop_0100/pubspec.yaml
new file mode 100644
index 000000000..254a7ccdc
--- /dev/null
+++ b/benchmark/built_value_loop_0100/pubspec.yaml
@@ -0,0 +1,28 @@
+name: built_value_loop_0100
+publish_to: none
+
+environment:
+  sdk: ^3.6.0
+
+dependencies:
+  built_value: any
+
+dev_dependencies:
+  build_runner: any
+  built_value_generator: any
+  
+dependency_overrides:
+  build:
+    path: /usr/local/google/home/davidmorgan/git/build/_benchmark/../build
+  build_config:
+    path: /usr/local/google/home/davidmorgan/git/build/_benchmark/../build_config
+  build_modules:
+    path: /usr/local/google/home/davidmorgan/git/build/_benchmark/../build_modules
+  build_runner:
+    path: /usr/local/google/home/davidmorgan/git/build/_benchmark/../build_runner
+  build_test:
+    path: /usr/local/google/home/davidmorgan/git/build/_benchmark/../build_test
+  build_web_compilers:
+    path: /usr/local/google/home/davidmorgan/git/build/_benchmark/../build_web_compilers
+
+