public async Task <List <Customer> > Run( [HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "v2/customer/{*customerId}")] HttpRequest req, ILogger log, string customerId) { log.LogInformation("---> Function Clientes invocada..."); int id = ExtractId(customerId); if (id == 0) { log.LogInformation("[FClientes] Listagem completa de clientes"); return(_customerDomain.GetCustomers()); } else { log.LogInformation("[FClientes] Listagem individual de cliente"); Customer customer = _customerDomain.GetCustomer(id); if (customer != null) { return new List <Customer>() { customer } } ; } return(null); }