public IChannelGroup Flush() => this.Flush(ChannelMatchers.All());
 public Task WriteAsync(object message) => this.WriteAsync(message, ChannelMatchers.All());
 public Task NewCloseFuture() => this.NewCloseFuture(ChannelMatchers.All());
 public Task DeregisterAsync() => this.DeregisterAsync(ChannelMatchers.All());
 public Task CloseAsync() => this.CloseAsync(ChannelMatchers.All());
 public Task DisconnectAsync() => this.DisconnectAsync(ChannelMatchers.All());