final EchoService client = getEchoClient(_client, Bootstrap.getEchoURI());
final String msg = "This is a simple echo message";
final FutureCallback<String> callback = new FutureCallback<String>();
client.echo(msg, callback);
callback.get();
// Make sure the server got its wire attribute
Assert.assertEquals(_serverCaptureFilter.getRequest().get(_toServerKey), _toServerValue);