code: function _endTransferableAnimations(item) {
          for (var j = 0; j < item.transferables.length; j++) {
              var transferable = item.transferables[j];
              for (var i = 0; i < this._renderables.transferables.length; i++) {
                  if (this._renderables.transferables[i] === transferable.renderNode) {
                      this._renderables.transferables.splice(i, 1);
                      break;
                  }
              }
              transferable.source.show(transferable.originalSource);
              transferable.target.show(transferable.originalTarget);
          }
          item.transferables = [];
          this.layout.reflowLayout();
      }
docs: Called whenever the view has been shown and the
  transferable animations should be ended. This returns
  the renderables to their original views.