text: define(['modules/ui/module','jquery-nestable'], function (module) {
  
      'use strict';
  
      return module.registerDirective('smartNestable', function () {
          return {
              restrict: 'A',
              scope: {
                  group: '@',
                  output: '='
              },
              link: function (scope, element, attributes) {
                  var options = {};
                  if(scope.group){
                      options.group = scope.group;
                  }
                  element.nestable(options);
                  if(attributes.output){
                      element.on('change', function(){
                          scope.$apply(function(){
                              scope.output = element.nestable('serialize');
                          });
                      });
                      scope.output = element.nestable('serialize');
                  }
  
              }
          }
      });
  });
  