docs: function StatelessClientChannel(client, writableFactory, opts) {
    ClientChannel.call(this, client, opts);
    this._writableFactory = writableFactory;
  
    if (!opts || !opts.noPing) {
      // Ping the server to check whether the remote protocol is compatible.
      // If not, this will throw an error on the channel.
      debug('emitting ping request');
      this.ping();
    }
  }