private function addSchedule(\DateTime $start, \DateInterval $diff, \Club\TeamBundle\Entity\Schedule $schedule)
 {
     // only count when we are in the future to get the following
     if ($start->getTimestamp() > time()) {
         $this->future_occur++;
     }
     $this->occur++;
     $parent = $schedule->getSchedule() ? $schedule->getSchedule() : $schedule;
     $res = $this->em->createQueryBuilder()->select('s')->from('ClubTeamBundle:Schedule', 's')->where('s.first_date = :date')->andWhere('(s.schedule = :id OR s.id = :id)')->setParameter('date', $start->format('Y-m-d H:i:s'))->setParameter('id', $parent->getId())->getQuery()->getResult();
     if (count($res)) {
         return;
     }
     // find new times
     $new_format = $start->format('Y-m-d') . ' ' . $schedule->getFirstDate()->format('H:i:s');
     if ($new_format == $schedule->getFirstDate()->format('Y-m-d H:i:s')) {
         return;
     }
     $new_first = new \DateTime($new_format);
     $new_end = new \DateTime($new_format);
     $new_end->add($diff);
     // make new schedule
     $new = new \Club\TeamBundle\Entity\Schedule();
     $new->setDescription($schedule->getDescription());
     $new->setMaxAttend($schedule->getMaxAttend());
     $new->setPenalty($schedule->getPenalty());
     $new->setFirstDate($new_first);
     $new->setEndDate($new_end);
     $new->setTeamCategory($schedule->getTeamCategory());
     $new->setLevel($schedule->getLevel());
     $new->setLocation($schedule->getLocation());
     $new->setSchedule($parent);
     foreach ($schedule->getInstructors() as $instructor) {
         $new->addInstructor($instructor);
     }
     foreach ($schedule->getFields() as $field) {
         $new->addField($field);
     }
     $this->em->persist($new);
     return $new;
 }