code: function getOpenMenuContainer(el) {
      var res;
      el = (el instanceof angular.element) ? el[0] : el;
      inject(function($document) {
        var container = $document[0].querySelector('.md-open-menu-container');
        if (container && container.style.display == 'none') {
          res = [];
        } else {
          res = angular.element(container);
        }
      });
      return res;
    }
docs: ******************************************** Internal methods ********************************************