Invitation::getRootStructureSectionId

static function getRootStructureSectionId(): int
{
	$result = 0;

	$structure = CIntranetUtils::getSubStructure(0, 1);
	if (
		empty($structure['DATA'])
		|| !is_array($structure['DATA'])
	)
	{
		return $result;
	}

	$rootSection = array_pop($structure['DATA']);
	if (isset($rootSection['ID']))
	{
		$result = intval($rootSection['ID']);
	}

	return $result;
}