public async Task <IActionResult> AddUnavailability([FromBody]
                                                            AddUnavailabilityCommand command
                                                            )
        {
            if (!ModelState.IsValid)
            {
                return((IActionResult)BadRequest());
            }

            var result = await _serviceCategoryService.AddUnavailability(command);

            return(CreatedAtAction(nameof(AddUnavailability), new { id = result.Id }, null));
        }