public ActionResult <PlatformReadDto> CreatePlatform(PlatformCreateDto platformCreateDto)
        {
            var platformModel = _mapper.Map <Platform>(platformCreateDto);

            _repository.CreatePlatform(platformModel);
            _repository.SaveChanges();

            var platformReadDto = _mapper.Map <PlatformReadDto>(platformModel);

            return(CreatedAtRoute(nameof(GetPlatformById), new { Id = platformReadDto.Id }, platformReadDto));
        }