/**
  * Add the specified user to the specified group.
  *
  * @param int $userId
  * @param int $groupId
  * @return GalleryStatus a status code
  */
 function addUserToGroup($userId, $groupId) {
 MyOOS_CoreApi::requireOnce(
     'modules/core/classes/helpers/GalleryUserGroupHelper_medium.class');
 return GalleryUserGroupHelper_medium::addUserToGroup($userId, $groupId);
 }
 /**
  * Return a list of user ids belonging to a group
  *
  * You can specify how many userids to list, and where the windows is in
  * the list of all users.
  *
  * @param int $groupId
  * @param int $count the number of user ids desired
  * @param int $offset the start of the range
  * @param string $substring substring to match against the username
  * @return array GalleryStatus a status code
  *               array user id => user name
  */
 function fetchUsersForGroup($groupId, $count = null, $offset = null, $substring = null)
 {
     MyOOS_CoreApi::requireOnce('modules/core/classes/helpers/GalleryUserGroupHelper_medium.class');
     return GalleryUserGroupHelper_medium::fetchUsersForGroup($groupId, $count, $offset, $substring);
 }