xmlDescriptor.setJavaClassName(jClassName);
String[] factoryMethodParamTypes = info.getFactoryMethodParamTypes();
MultiArgInstantiationPolicy policy = new MultiArgInstantiationPolicy();
policy.useFactoryInstantiationPolicy(info.getObjectFactoryClassName(), info.getFactoryMethodName());
policy.setParameterTypeNames(factoryMethodParamTypes);
policy.setDefaultValues(new String[]{null});
xmlDescriptor.setInstantiationPolicy(policy);
JavaClass paramClass = helper.getJavaClass(factoryMethodParamTypes[0]);