function getUnallowedFieldsForUnicity()
{
return array_merge(parent::getUnallowedFieldsForUnicity(), array('begin_date', 'duration', 'entities_id', 'monday_begin_hour', 'monday_end_hour', 'saturday_begin_hour', 'saturday_end_hour', 'week_begin_hour', 'week_end_hour'));
}