anchor.diff:        ConstructorElementImpl constructor =
             declaration.element as ConstructorElementImpl;
         constructor.constantInitializers =
  -          new ConstantValueComputer_InitializerCloner()
  -              .cloneNodeList(initializers);
  +          new ConstantAstCloner().cloneNodeList(initializers);
       } else if (constNode is FormalParameter) {
         if (constNode is DefaultFormalParameter) {
           DefaultFormalParameter parameter = constNode;
  
positive.code:    */
    static BoolState from(bool value) =>
        value ? BoolState.TRUE_STATE : BoolState.FALSE_STATE;
  }
  
  /**
  
negative.code:   static bool isValidPublicSymbol(String name) => name.isEmpty ||
        name == "void" ||
        new JavaPatternMatcher(_PUBLIC_SYMBOL_PATTERN, name).matches();
  }
  
  /**
  