/**
* Audio constructor.
*
* @param string $id
* @param string $audioUrl
* @param string $title
* @param string|null $performer
* @param int|null $audioDuration
* @param InputMessageContent|null $inputMessageContent
* @param InlineKeyboardMarkup|null $inlineKeyboardMarkup
*/
public function __construct($id, $audioUrl, $title, $performer = null, $audioDuration = null, $inputMessageContent = null, $inlineKeyboardMarkup = null)
{
parent::__construct($id, $title, $inputMessageContent, $inlineKeyboardMarkup);
$this->audioUrl = $audioUrl;
$this->performer = $performer;
$this->audioDuration = $audioDuration;
}