public async Task <IActionResult> UpdatePassengerAsync(int id, PassengerUpdateDto passengerUpdateDto)
        {
            if (id != passengerUpdateDto.Id)
            {
                return(BadRequest());
            }

            var passengerFromRepo = await _repository.GetByIdAsync(id);

            if (passengerFromRepo == null)
            {
                return(NotFound());
            }

            _mapper.Map(passengerUpdateDto, passengerFromRepo);
            //_repository.UpdatePassenger(passengerFromRepo.Value); // this is achieved by the previous code

            try
            {
                await _repository.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if ((await _repository.GetByIdAsync(id)) == null)
                {
                    return(NotFound());
                }
            }

            return(NoContent());
        }