public async Task <ActionResult <InvoiceApiModel> > GetByCustomerId(int id, CancellationToken ct = default)
        {
            try
            {
                if (await _BlazorSupervisor.GetCustomerByIdAsync(id, ct) == null)
                {
                    return(NotFound());
                }

                return(Ok(await _BlazorSupervisor.GetInvoiceByCustomerIdAsync(id, ct)));
            }
            catch (Exception ex)
            {
                return(StatusCode(500, ex));
            }
        }