Network::instanceDialogSession

static function instanceDialogSession(int $botId, ?string $dialogId = null): ImBotDialogSession
{
	static $dialogSession;
	if (!($dialogSession instanceof ImBotDialogSession))
	{
		$dialogSession = new ImBotDialogSession($botId ?: static::getBotId(), $dialogId);
		$dialogSession->load();
	}

	return $dialogSession;
}