Cannot handle Freemaker templates from a main

    private void doIt() throws IOException {
        Furnace furnace = startFurnace();
        try {

            ResourceFactory resourceFactory = furnace.getAddonRegistry().getServices(ResourceFactory.class).get();
            TemplateProcessorFactory factory = furnace.getAddonRegistry().getServices(TemplateProcessorFactory.class).get();

            Resource<URL> templateResource = resourceFactory.create(getClass().getResource("RestEndpoint.jv"));
            Template template = new FreemarkerTemplate(templateResource); // Mark this resource as a Freemarker template
            TemplateProcessor processor = factory.fromTemplate(template);
            Map<String, Object> params = new HashMap<String, Object>(); //Could be a POJO also.
            params.put("name", "JBoss Forge");
            String output = processor.process(params); // should return "Hello JBoss Forge".

            System.out.println(output);

        } finally {
            furnace.stop();
        }
    }

Exception in thread "main" org.jboss.forge.furnace.exception.ContainerException: Failed to create proxy for type [class org.jboss.forge.addon.templates.freemarker.FreemarkerTemplate]
	at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback.enhance(ClassLoaderAdapterCallback.java:827)
	at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback.enhance(ClassLoaderAdapterCallback.java:687)
	at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback.enhanceSingleParameterValue(ClassLoaderAdapterCallback.java:617)
	at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback.enhanceParameterValues(ClassLoaderAdapterCallback.java:489)
	at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback.access$100(ClassLoaderAdapterCallback.java:34)
	at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback$1.call(ClassLoaderAdapterCallback.java:92)
	at org.jboss.forge.furnace.util.ClassLoaders.executeIn(ClassLoaders.java:34)
	at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback.invoke(ClassLoaderAdapterCallback.java:71)
	at org.jboss.forge.addon.templates.TemplateProcessorFactory_$$_javassist_381849cc-8aad-4339-adb9-66683e1ebbde.fromTemplate(TemplateProcessorFactory_$$_javassist_381849cc-8aad-4339-adb9-66683e1ebbde.java)
	at org.agoncal.sample.forge.template.RestEndpoint.doIt(RestEndpoint.java:47)
	at org.agoncal.sample.forge.template.RestEndpoint.main(RestEndpoint.java:35)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.lang.InstantiationException: org.jboss.forge.addon.templates.Template_$$_javassist_840b9c34-f23e-4d1e-8a3e-14ff4dfc9c4e
	at java.lang.Class.newInstance(Class.java:359)
	at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback$2.call(ClassLoaderAdapterCallback.java:785)
	at org.jboss.forge.furnace.util.ClassLoaders.executeIn(ClassLoaders.java:34)
	at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback.enhance(ClassLoaderAdapterCallback.java:707)
	... 15 more