LoadLimiter::getConnectionResource

static function getConnectionResource(): ?object
{
	$result = null;
	$connectionName = static::getConnectionName();
	if ($connectionName)
	{
		$connection = Application::getInstance()
			->getConnectionPool()
			->getConnection($connectionName);

		if ($connection && $connection->isConnected() === true)
		{
			$result = $connection->getResource();
		}
	}

	return $result;
}