code: function _unregister(modules) {
                      if (angular.isDefined(modules)) {
                          if (angular.isArray(modules)) {
                              angular.forEach(modules, function (module) {
                                  regInvokes[module] = undefined;
                              });
                          }
                      }
                  }
docs: Unregister modules (you shouldn't have to use this)
  @param modules