massage variable

/**
   * Massages the message body into the format expected for rendering.
   *
   * @param array $message
   *   The message.
   *
   * @return array
   */
  public function cleanBody(array $message) {
    // Get default mail line endings and merge all lines in the e-mail body
    // separated by the mail line endings. Keep Markup objects and escape others
    // and then treat the result as safe markup.
    $line_endings = Settings::get('mail_line_endings', PHP_EOL);
    $message['body'] = Markup::create(implode($line_endings, array_map(function ($body) {
      // If $item is not marked safe then it will be escaped.
      return $body instanceOf MarkupInterface ? $body : Html::escape($body);
    }, $message['body'])));
    return $message;
  }