/// <summary>
/// Register/Unregister a Google Cloud Messaging registration ID.
/// </summary>
/// <param name="token">The cancellation token</param>
/// <param name="gcmRegistrationId">The GCM id to register. A call with an absent value will unregister.</param>
/// <returns></returns>
public async Task SetGcmId(CancellationToken token, string gcmRegistrationId)// throws IOException
{
if (gcmRegistrationId != null)
{
await PushServiceSocket.RegisterGcmId(token, gcmRegistrationId);
}
else
{
await PushServiceSocket.UnregisterGcmId(token);
}
}
