ScheduleTable::getWorktimeRestrictionsKeys

static function getWorktimeRestrictionsKeys()
{
	$reflection = new ReflectionClass(__CLASS__);
	$constants = array_diff($reflection->getConstants(), $reflection->getParentClass()->getConstants());
	return array_filter($constants, function ($element) {
		return strncmp('WORKTIME_RESTRICTION_', $element, mb_strlen('WORKTIME_RESTRICTION_')) === 0;
	}, ARRAY_FILTER_USE_KEY);
}