original_string: protected function add_userids(array $userids) : userlist_base {
          $this->set_userids(array_merge($this->get_userids(), $userids));
  
          return $this;
      }
code: protected function add_userids(array $userids) : userlist_base {
          $this->set_userids(array_merge($this->get_userids(), $userids));
  
          return $this;
      }
code_tokens: protected function add_userids ( array $ userids ) : userlist_base { $ this -> set_userids ( array_merge ( $ this -> get_userids ( ) , $ userids ) ) ; return $ this ; }
docstring: Add a set of additional userids.
  
  @param   array   $userids The list of users.
  @return  $this
docstring_tokens: Add a set of additional userids .