code: protected function setPrefixAndSuffix($prefix, $suffix)
      {
          if (!is_null($prefix)) {
              $this->prefix = $prefix;
          }
  
          if (!is_null($suffix)) {
              $this->suffix = $suffix;
          }
      }
docs: Optionally Set custom prefix and/or suffix
  
  @param $prefix
  @param $suffix