code: private function getFooter($time, $memory, $isDryRun)
      {
          if (0 === $time || 0 === $memory) {
              return '';
          }
  
          return PHP_EOL.sprintf(
              '%s all files in %.3f seconds, %.3f MB memory used'.PHP_EOL,
              $isDryRun ? 'Checked' : 'Fixed',
              $time / 1000,
              $memory / 1024 / 1024
          );
      }
docs: @param int  $time
  @param int  $memory
  @param bool $isDryRun
  
  @return string