RestService::detectSupportBot

static function detectSupportBot(): ?string
{
	static $classSupport = null;

	if ($classSupport === null)
	{
		/** @var BitrixImbotBotSupportBot $classSupport */
		if (
			Loader::includeModule('bitrix24')
			&& BitrixImBotBotSupport24::isEnabled()
		)
		{
			$classSupport = BitrixImBotBotSupport24::class;
		}
		elseif (BitrixImBotBotSupportBox::isEnabled())
		{
			$classSupport = BitrixImBotBotSupportBox::class;
		}
	}

	return $classSupport;
}