sdk/dart/fuchsia_services/test_support/fidl/foo.fidl

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
library test.fuchsia.service.foo;

@discoverable
protocol Foo {
    echo(struct {
        value string:optional;
    }) -> (struct {
        response string:optional;
    });
};