docs: function _GpfLikeContext (alike) {
      /*jshint validthis:true*/ // constructor
      this._pending = [];
      this._done = [];
      // Override for this instance only
      if (true === alike) {
          this._haveDifferentPrototypes = _gpfFalseFunc;
      } else {
          this._alike = _gpfFalseFunc;
      }
  }