// GET: api/cliente
        public IHttpActionResult Get()
        {
            List <Cliente> clientes = null;

            try {
                clientes = PriIntegration.GetListaClientes();
            } catch (InvalidOperationException e) {
                return(BadRequest(e.Message));
            } catch (Exception) {
                return(InternalServerError());
            }

            if (clientes == null)
            {
                return(StatusCode(HttpStatusCode.NoContent));
            }
            else
            {
                return(Ok(clientes));
            }
        }