public async Task <IActionResult> PutBike(int id, BikeDto bike)
        {
            Bike b = BikeDto.FromBikeDto(bike);

            if (id != b.Id)
            {
                return(BadRequest());
            }

            _context.Entry(b).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!BikeExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }
        public async Task <ActionResult <BikeDto> > PostBike(BikeDto bike)
        {
            Bike b = BikeDto.FromBikeDto(bike);

            _context.Bikes.Add(b);
            await _context.SaveChangesAsync();

            return(CreatedAtAction("GetBike", new { id = bike.Id }, BikeDto.ToBikeDto(b)));
        }