anchor.diff:    static const CompileTimeErrorCode FINAL_NOT_INITIALIZED_CONSTRUCTOR_2 =
         CompileTimeErrorCodeWithUniqueName(
             'FINAL_NOT_INITIALIZED_CONSTRUCTOR',
  -          'CompileTimeErrorCode.FINAL_NOT_INITIALIZED_CONSTRUCTOR_2',
  +          'FINAL_NOT_INITIALIZED_CONSTRUCTOR_2',
             "All final variables must be initialized, but '{0}' and '{1}' "
                 "aren't.",
             correction: "Try adding initializers for the fields.",
  
positive.code:       NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_FOUR =
        CompileTimeErrorCodeWithUniqueName(
            'NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER',
            ' CompileTimeErrorCode.NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_FOUR',
            "Missing concrete implementations of '{0}', '{1}', '{2}', and '{3}'.",
            correction: "Try implementing the missing methods, or make the class "
                "abstract.",
  
negative.code:       NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_THREE =
        CompileTimeErrorCodeWithUniqueName(
            'NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER',
            'NON_ABSTRACT_CLASS_INHERITS_ABSTRACT_MEMBER_THREE',
            "Missing concrete implementations of '{0}', '{1}', and '{2}'.",
            correction: "Try implementing the missing methods, or make the class "
                "abstract.",
  