anchor.diff:                false  // Not const.
                 );
   
  -  final int _position;
  -  final bool isOptional;
  -  final bool isNamed;
  -  final List _unmirroredMetadata;
  -
     Object _defaultValueReflectee;
     InstanceMirror _defaultValue;
     InstanceMirror get defaultValue {
  
positive.code: 
  class _LocalParameterMirror extends _LocalVariableMirror
      implements ParameterMirror {
    _LocalParameterMirror(reflectee,
                          String simpleName,
                          DeclarationMirror owner,
  
negative.code: }
  
  List _metadata(reflectee)
      native 'DeclarationMirror_metadata';
  
  class _LocalMirrorSystem extends MirrorSystem {
    final Map<Uri, LibraryMirror> libraries;
    final IsolateMirror isolate;
  
    _LocalMirrorSystem(List<LibraryMirror> libraries, this.isolate)
        : this.libraries = new Map<Uri, LibraryMirror>.fromIterable(
              libraries, key: (e) => e.uri);
  
    TypeMirror _dynamicType = null;
    TypeMirror get dynamicType {
  