anchor.diff:  
     bool isFinal;
     bool isStatic;
  +  bool isConst;
     String type;
   
     /// List of the meta annotations on the variable.
     List<String> annotations;
     
  -  Variable(String name, this.isFinal, this.isStatic, this.type, String comment, 
  -      this.annotations, String qualifiedName) : super(name, comment, 
  -          qualifiedName);
  +  Variable(String name, this.isFinal, this.isStatic, this.isConst, this.type, 
  +      String comment, this.annotations, String qualifiedName) : super(name, 
  +          comment, qualifiedName);
     
     /// Generates a map describing the [Variable] object.
     Map toMap() => {
  
positive.code:   Map<String, Parameter> parameters;
  
    bool isStatic;
    String returnType;
  
    /// List of the meta annotations on the method.
    List<String> annotations;
    
    Method(String name, this.isStatic, this.returnType, String comment, 
        this.parameters, this.annotations, String qualifiedName) 
        : super(name, comment, qualifiedName);
    
    /// Generates a map describing the [Method] object.
  
negative.code:       'comment': comment,
        'final': isFinal.toString(),
        'static': isStatic.toString(),
        'constant': isConst.toString(),
        'type': type,
        'annotations': new List.from(annotations)
      };
  