public RentalService(
     IMapper mapper,
     IRentalRepository rentalRepository,
     IRentalTypeRepository rentalTypeRepository)
     : base(mapper, rentalRepository)
 {
     _rentalRepository     = rentalRepository;
     _rentalTypeRepository = rentalTypeRepository;
 }
 public RentalTypeService(IMapper mapper, IRentalTypeRepository rentalTypeRepository)
     : base(mapper, rentalTypeRepository)
 {
 }