CtClass proxy = TransformerCommon.makeClass(pool, classname, superclass);
mixinField = new CtField(mixinField.getType(), "mixins", proxy);
mixinField.setModifiers(Modifier.PRIVATE);
proxy.addField(mixinField);
instanceAdvisor = new CtField(instanceAdvisor.getType(), "instanceAdvisor", proxy);
instanceAdvisor.setModifiers(Modifier.PRIVATE);
proxy.addField(instanceAdvisor);
CtMethod writeEx = CtNewMethod.make(" public void writeExternal(java.io.ObjectOutput out)\n" +