$gids * @return list the list of group that exists * @since 28.0.0 */ public function groupsExists(array $gids): array; /** * @brief Batch method to get the group details of a list of groups * * The default implementation in ABackend will just call getGroupDetails in * a loop. But a GroupBackend implementation should override this method * to provide a more optimized way to execute this operation. * * @throw \RuntimeException if called on a backend that doesn't implements IGroupDetailsBackend * * @return array * @since 28.0.0 */ public function getGroupsDetails(array $gids): array; }