/**
* @param ICalendar $calendar
* @return boolean
*/
private function areMinorChanges(ICalendar $calendar)
{
$allowed = ['color', 'components', 'description', 'displayname', 'enabled', 'order'];
$updatedFields = array_keys($calendar->getUpdatedFields());
$majorChanges = array_diff($updatedFields, $allowed);
return empty($majorChanges);
}
