ex.setCallbacks(new Callback[] { sendPacketCallback, noOpCallback });
ex.setCallbackFilter(callbackFilter);
// Find the Minecraft NetServerHandler superclass
Class<?> minecraftSuperClass = getFirstMinecraftSuperClass(serverHandler.getClass());
ExistingGenerator generator = ExistingGenerator.fromObjectFields(serverHandler, minecraftSuperClass);
DefaultInstances serverInstances = null;
// Maybe the proxy instance can help?
Object proxyInstance = getProxyServerHandler();