ApiService::getPath

private function getPath(string $path, ?string $xmlId): string
{
	if (mb_substr($path, -mb_strlen('/' . $xmlId . '.ics')) != '/' . $xmlId . '.ics')
	{
		$path = rtrim($path, '/');
		$path .= '/' . $xmlId . '.ics';
	}

	return $path;
}