anchor.diff:  
   class _LocalVariableMirror extends _LocalDeclarationMirror
       implements VariableMirror {
  +  final DeclarationMirror owner;
  +  final bool isStatic;
  +  final bool isFinal;
  +  final bool isConst;
  +
     _LocalVariableMirror(reflectee,
                          String simpleName,
                          this.owner,
  
positive.code: }
  
  abstract class _LocalObjectMirror extends _LocalMirror implements ObjectMirror {
    _LocalObjectMirror(this._reflectee);
  
    final _reflectee; // May be a MirrorReference or an ordinary object.
  
    InstanceMirror invoke(Symbol memberName,
                          List positionalArguments,
                          [Map<Symbol, dynamic> namedArguments]) {
  
      int numPositionalArguments = positionalArguments.length;
      int numNamedArguments = namedArguments != null ? namedArguments.length : 0;
      int numArguments = numPositionalArguments + numNamedArguments;
  
negative.code:                       this._isGenericDeclaration,
                        this._owner)
        : super(reflectee, _s(simpleName));
  
    bool get isTopLevel => true;
    bool get isPrivate => false;
  