code: function($newDraggee) {
              if (!$newDraggee.length) {
                  return;
              }
  
              if (!this.settings.collapseDraggees) {
                  var oldLength = this.$draggee.length;
              }
  
              this.$draggee = $(this.$draggee.toArray().concat($newDraggee.toArray()));
  
              // Create new helpers?
              if (!this.settings.collapseDraggees) {
                  var newLength = this.$draggee.length;
  
                  for (var i = oldLength; i < newLength; i++) {
                      this._createHelper(i);
                  }
              }
  
              if (this.settings.removeDraggee || this.settings.collapseDraggees) {
                  $newDraggee.hide();
              }
              else {
                  $newDraggee.css('visibility', 'hidden');
              }
          }
docs: Appends additional items to the draggee.