public MilkBusinessLogic(IMilkRepository repo, IUserRepository userRepo, ICowRepository cowRepo)
 {
     _repo = repo;
     _userRepo = userRepo;
     _cowRepo = cowRepo;
 }
 public ReportingBusinessLogic(ICowRepository cowRepo, IUserRepository userRepo, IMilkRepository milkRepo)
 {
     _cowRepo = cowRepo;
     _userRepo = userRepo;
     _milkRepo = milkRepo;
 }