for::isSplitDenied

static function isSplitDenied($arGroups = null)
{
	global $USER;

	if($arGroups === null)
	{
		return $USER->IsAuthorized()
			&& count(array_intersect(self::getGroupsDenySplit(), $USER->GetUserGroupArray())) > 0;
	}
	else
	{
		return count(array_intersect(self::getGroupsDenySplit(), $arGroups)) > 0;
	}
}