original_string: public function toUserId($userIds)
      {
          $userIds = is_string($userIds) || is_integer($userIds) ? func_get_args() : $userIds;
  
          foreach ($userIds as $userId) {
              $fds = $this->room->getClients(static::USER_PREFIX . $userId);
              $this->to($fds);
          }
  
          return $this;
      }
code: public function toUserId($userIds)
      {
          $userIds = is_string($userIds) || is_integer($userIds) ? func_get_args() : $userIds;
  
          foreach ($userIds as $userId) {
              $fds = $this->room->getClients(static::USER_PREFIX . $userId);
              $this->to($fds);
          }
  
          return $this;
      }
code_tokens: public function toUserId ( $ userIds ) { $ userIds = is_string ( $ userIds ) || is_integer ( $ userIds ) ? func_get_args ( ) : $ userIds ; foreach ( $ userIds as $ userId ) { $ fds = $ this -> room -> getClients ( static :: USER_PREFIX . $ userId ) ; $ this -> to ( $ fds ) ; } return $ this ; }
docstring: Set multiple recepients' fds by userIds.
  
  @param $userIds
  
  @return \SwooleTW\Http\Websocket\Authenticatable
docstring_tokens: Set multiple recepients fds by userIds .