366     public function get_participant($user_id, $can_be_removed=false) {  argument
375         $r = $this->model->sqlite->query($q, $this->id, $user_id);
384     public function is_subscribent($user_id=null) {  argument
385         if ($user_id == null) {
386             $user_id = $this->model->user_nick;
388         $par = $this->get_participant($user_id);
395     public function remove_participant_flags($user_id, $flags) {  argument
401         $participant = $this->get_participant($user_id, true);
403             throw new ConsistencyViolationException("$user_id isn't participant");
414         $this->model->sqlite->query($sql, $this->id, $user_id);
418     public function set_participant_flags($user_id, $flags=array()) {  argument
425         if (!$this->model->userFactory->exists($user_id)) {
426             throw new \Exception("$user_id isn't dokuwiki user");
434         $participant = $this->get_participant($user_id, true);
439             $participant['user_id'] = $user_id;
453             $this->model->sqlite->query($q, $this->id, $user_id);
457     public function remove_participant($user_id) {  argument
463         $participant = $this->get_participant($user_id);
465             throw new ConsistencyViolationException("$user_id isn't participant");
473         $this->model->sqlite->query($q, $this->id, $user_id);