} else if (descriptor instanceof InternalProblemDescriptor) {
            broadcastProblemEvent(progressEvent, (InternalProblemDescriptor) descriptor);
        } else {
            broadcastGenericProgressEvent(progressEvent);
        }
    }

    private void broadcastStatusEvent(InternalStatusEvent progressEvent) {
        OperationDescriptor descriptor = descriptorCache.get(progressEvent.getDescriptor().getId());