@Override
 public void updateClub(ClubData clubData) {
   Club club = findClub(clubData.getAcronym());
   club.setName(clubData.getName());
   Coach coach = club.getCoach();
   coach.setName(clubData.getCoach().getName());
   coach.setMail(clubData.getCoach().getEmail());
   coach.setTel(clubData.getCoach().getPhoneNumber());
   clubRepository.save(club);
 }
 private Club convertClub(ClubData clubData) {
   Club club = new Club();
   club.setName(clubData.getName());
   club.setAcronym(clubData.getAcronym().toUpperCase());
   club.setCoach(convertCoach(clubData.getCoach()));
   return club;
 }