docs: function () {
              var handleArr = this._handlesArr;
              if (!handleArr || !this._resizable) {
                  return;
              }
  
              for (var i = 0, ii = handleArr.length; i < ii; i++) {
                  var cursor = handleArr[i];
                  if (this._resizable[cursor]) {
                      this._resizable[cursor].$dispose();
                      this._resizable[cursor] = null;
                  }
              }
              this._resizable = null;
          }