// 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 fuchsia.firebase.messaging;

[Discoverable]
protocol Controller {
    /// Registers the app with the FCM backend and binds a handle for app
    /// specific operations.
    /// On error, client is left unbound.
    CreateClient(Application application, request<Client> client)
        -> (string? token, Error? error);
};