code: function captureClickListener(e) {
            var target = e.target;
            // Traverse up the event until we get to the menuContentEl to see if
            // there is an ng-click and that the ng-click is not disabled
            do {
              if (target == opts.menuContentEl[0]) return;
              if ((hasAnyAttribute(target, ['ng-click', 'ng-href', 'ui-sref']) ||
                  target.nodeName == 'BUTTON' || target.nodeName == 'MD-BUTTON') && !hasAnyAttribute(target, ['md-prevent-menu-close'])) {
                var closestMenu = $mdUtil.getClosest(target, 'MD-MENU');
                if (!target.hasAttribute('disabled') && (!closestMenu || closestMenu == opts.parent[0])) {
                  close();
                }
                break;
              }
            } while (target = target.parentNode);
  
            function close() {
              scope.$apply(function() {
                opts.mdMenuCtrl.close(true, { closeAll: true });
              });
            }
  
            function hasAnyAttribute(target, attrs) {
              if (!target) return false;
  
              for (var i = 0, attr; attr = attrs[i]; ++i) {
                if (prefixer.hasAttribute(target, attr)) {
                  return true;
                }
              }
  
              return false;
            }
          }
docs: Close menu on menu item click, if said menu-item is not disabled