reload: function() {
        forceReload = true;
        $rootScope.$evalAsync(function() {
          // Don't support cancellation of a reload for now...
          prepareRoute(); // <-- param is empty
          commitRoute();
        });
      },

function prepareRoute($locationEvent) {
  var lastRoute = $route.current;

  preparedRoute = parseRoute();
  preparedRouteIsUpdateOnly = preparedRoute && lastRoute && preparedRoute.$$route === lastRoute.$$route
      && angular.equals(preparedRoute.pathParams, lastRoute.pathParams)
      && !preparedRoute.reloadOnSearch && !forceReload;

  if (!preparedRouteIsUpdateOnly && (lastRoute || preparedRoute)) {
    if ($rootScope.$broadcast('$routeChangeStart', preparedRoute, lastRoute).defaultPrevented) {
      if ($locationEvent) { <-- is undefined
        $locationEvent.preventDefault();
      }
    }
  }
}