Analyzer snapshot with disabled 'this.field' generation.

pkg/analyzer/lib/src/generated/utilities_dart.dart

Index: pkg/analyzer/lib/src/generated/utilities_dart.dart
diff --git a/pkg/analyzer/lib/src/generated/utilities_dart.dart b/pkg/analyzer/lib/src/generated/utilities_dart.dart
index aef747336c0f48b56dcc14fb5c9367f77f69f74d..a9bddb51baf245a15d96cccdd316b8628c52d410 100644
--- a/pkg/analyzer/lib/src/generated/utilities_dart.dart
+++ b/pkg/analyzer/lib/src/generated/utilities_dart.dart
@@ -26,12 +26,14 @@ class ParameterKind extends Enum<ParameterKind> {
   /**
    * A flag indicating whether this is an optional parameter.
    */
-  final bool isOptional;
+  bool isOptional = false;
 
   /**
    * Initialize a newly created kind with the given state.
    *
    * @param isOptional `true` if this is an optional parameter
    */
-  ParameterKind(String name, int ordinal, this.isOptional) : super(name, ordinal);
+  ParameterKind(String name, int ordinal, bool isOptional) : super(name, ordinal) {
+    this.isOptional = isOptional;
+  }
 }