public ActionResult <Pet> ChangeOwner(int petId, ChangeOwnerDTO changeOwnerDTO)
        {
            var pet = _mapper.Map <Pet>(changeOwnerDTO);

            _petService.ChangeOwner(petId, changeOwnerDTO.PersonId);
            return(Ok(pet));
        }
        public ActionResult <Pet> ChangeOwnerById(int currentOwnerId, ChangePetOwnerDTO NewOwner)
        {
            var petOwnerToChange = new Pet();

            petOwnerToChange.PersonId = NewOwner.PersonId;
            var pet = _PetService.ChangeOwner(currentOwnerId, petOwnerToChange);

            return(Ok());
        }