KeyManager::getAccessKey

static function getAccessKey(): ?string
{
	$key = BitrixBIConnectorKeyTable::getList([
		'select' => [
			'ACCESS_KEY',
		],
		'filter' => [
			'=ACTIVE' => 'Y',
			'=APP_ID' => false,
		],
		'order' => [
			'ID' => 'DESC',
		],
		'limit' => 1,
	])->fetch();
	if ($key === false)
	{
		return null;
	}

	return $key['ACCESS_KEY'] ?? null;
}