public IActionResult GetContactById(int id)
        {
            if (id == 0)
            {
                return(BadRequest());
            }

            var foundContact = _contactsService.GetContactById(id);

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

            try
            {
                return(Ok(_contactsService.GetContactById(id)));
            }
            catch (Exception ex)
            {
                log.Error("PublicAddressBookApiError: ", ex);
                return(StatusCode(StatusCodes.Status500InternalServerError));
            }
        }