MapInjector([Injector _parent = null, Map values = null ])

Source 

MapInjector([this._parent = null, Map<dynamic, dynamic> values = null]) {
  if (values == null) {
    values = new Map<dynamic, dynamic>();
  }
  this._values = values;
  if (_parent == null) {
    this._parent = Injector.NULL;
  }
}