Manager::isRestHandler

static function isRestHandler($handler)
{
	static $result = [];

	if (isset($result[$handler]))
	{
		return $result[$handler];
	}

	$handlerData = PaySystemRestHandlersTable::getList([
		'filter' => ['=CODE' => $handler],
		'limit' => 1,
	])->fetch();
	$result[$handler] = (bool)$handlerData;

	return $result[$handler] ?? false;
}