protected <R extends Request<?, R>> R backendRespondToRequest(final Class<R> expectedRequestClass,
final Response<?, ?> response) {
final RequestEnvelope envelope = backendProbe.expectMsgClass(RequestEnvelope.class);
protected <R extends Request<?, R>> R backendRespondToRequest(final Class<R> expectedRequestClass,
final Response<?, ?> response) {
final RequestEnvelope envelope = backendProbe.expectMsgClass(RequestEnvelope.class);