Disk::getUploadedFilesFolder

static function getUploadedFilesFolder(array $params): ?int
{
	global $USER;

	$userId = ((int)$params['userId'] ?: (int)$USER->getId());

	if (
		!Loader::includeModule('disk')
		|| !($storage = Driver::getInstance()->getStorageByUserId($userId))
		|| !($folder = $storage->getFolderForUploadedFiles())
	)
	{
		return null;
	}

	return $folder->getId();
}