code: function() {
              this._returningHelpersToDraggees = true;
  
              for (var i = 0; i < this.helpers.length; i++) {
                  var $draggee = this.$draggee.eq(i),
                      $helper = this.helpers[i];
  
                  $draggee.css({
                      display: this.draggeeDisplay,
                      visibility: 'hidden'
                  });
  
                  var draggeeOffset = $draggee.offset();
                  var callback;
  
                  if (i === 0) {
                      callback = $.proxy(this, '_showDraggee');
                  }
                  else {
                      callback = null;
                  }
  
                  $helper.velocity({left: draggeeOffset.left, top: draggeeOffset.top}, Garnish.FX_DURATION, callback);
              }
          }
docs: Return Helpers to Draggees