public void Delete(TennisClub club)
 {
     club.Deleted = true;
     _tennisClubRepository.Update(club);
 }
 public void Update(TennisClub club)
 {
     _tennisClubRepository.Update(club);
 }
 public void Add(TennisClub club)
 {
     _tennisClubRepository.Insert(club);
 }