Support multiple categories per message.

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

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 /*
 DON'T EDIT. GENERATED. DON'T EDIT.
 This file has been generated by 'publish.dart' in the dart_messages package.
 
 Messages are maintained in `lib/shared_messages.dart` of that same package.
 After any change to that file, run `bin/publish.dart` to generate a new version
 of the json, dart2js and analyzer representations.
@@ skipping 63 matching lines @@
 
 const CompileTimeErrorCode RETURN_IN_GENERATIVE_CONSTRUCTOR = const CompileTimeErrorCode(
     'RETURN_IN_GENERATIVE_CONSTRUCTOR',
     "Constructors can't return values.",
     "Try removing the return statement or using a factory constructor.");  // Generated. Don't edit.
 
 const CompileTimeErrorCode RETURN_IN_GENERATOR = const CompileTimeErrorCode(
     'RETURN_IN_GENERATOR',
     "Can't return a value from a generator function (using the '{0}' modifier).",
     "Try removing the value, replacing 'return' with 'yield' or changing the method body modifier");  // Generated. Don't edit.
+
+const StaticTypeWarningCode RETURN_OF_INVALID_TYPE = const StaticTypeWarningCode(
+    'RETURN_OF_INVALID_TYPE',
+    "The return type '{0}' is not a '{1}', as defined by the method '{2}'.",
+    null);  // Generated. Don't edit.
+
+const HintCode ARGUMENT_TYPE_NOT_ASSIGNABLE_HINT = const HintCode(
+    'ARGUMENT_TYPE_NOT_ASSIGNABLE',
+    "The argument type '{0}' cannot be assigned to the parameter type '{1}'.",
+    null);  // Generated. Don't edit.
+
+const StaticWarningCode ARGUMENT_TYPE_NOT_ASSIGNABLE_STATIC_WARNING = const StaticWarningCode(
+    'ARGUMENT_TYPE_NOT_ASSIGNABLE',
+    "The argument type '{0}' cannot be assigned to the parameter type '{1}'.",
+    null);  // Generated. Don't edit.