original_string: protected function process_remove_submission($userid = 0) {
          require_sesskey();
  
          if (!$userid) {
              $userid = required_param('userid', PARAM_INT);
          }
  
          return $this->remove_submission($userid);
      }
code: protected function process_remove_submission($userid = 0) {
          require_sesskey();
  
          if (!$userid) {
              $userid = required_param('userid', PARAM_INT);
          }
  
          return $this->remove_submission($userid);
      }
code_tokens: protected function process_remove_submission ( $ userid = 0 ) { require_sesskey ( ) ; if ( ! $ userid ) { $ userid = required_param ( 'userid' , PARAM_INT ) ; } return $ this -> remove_submission ( $ userid ) ; }
docstring: Remove the current submission.
  
  @param int $userid
  @return boolean
docstring_tokens: Remove the current submission .