original_string: static public function is_async_enabled() {
          global $CFG;
  
          $async = false;
          if (!empty($CFG->enableasyncbackup)) {
              $async = true;
          }
  
          return $async;
      }
code: static public function is_async_enabled() {
          global $CFG;
  
          $async = false;
          if (!empty($CFG->enableasyncbackup)) {
              $async = true;
          }
  
          return $async;
      }
code_tokens: static public function is_async_enabled ( ) { global $ CFG ; $ async = false ; if ( ! empty ( $ CFG -> enableasyncbackup ) ) { $ async = true ; } return $ async ; }
docstring: Check if asynchronous backup and restore mode is
  enabled at system level.
  
  @return bool $async True if async mode enabled false otherwise.
docstring_tokens: Check if asynchronous backup and restore mode is enabled at system level .