public async Task <IHttpActionResult> AddCustomer([FromBody] UpdateCustomerRequest createRequest)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            var customer = await _customerService.CreateCustomerAsync(createRequest);

            var location = $"/api/customers/create/{customer.Id}";

            return(Created <CustomerFullInfo>(location, customer));
        }