anchor.diff:    ConstructorElementImpl currentConstructor;
   
     /**
  -   * If a class is currently being resynthesized, map from field name to the
  -   * corresponding field element.  This is used when resynthesizing
  -   * initializing formal parameters.
  -   */
  -  Map<String, FieldElementImpl> fields;
  -
  -  /**
      * If a class is currently being resynthesized, map from constructor name to
      * the corresponding constructor element.  This is used when resynthesizing
      * constructor initializers.
  
positive.code:     if (handle == null) {
        buildClassExecutables(classElement, serializedClass);
      }
      fields = null;
      constructors = null;
      return classElement;
    }
  
negative.code:       }
      }
      return variablesData;
    }
  
    /**
  