code: public static void writeGen(JavaFileObject fileObject, JsonModelModel model)
  			throws IOException {
  		MvelTemplate.writeGen(fileObject, model);
  	}
docs: Generates source code into the given file object from the given data model, utilizing the templating engine.
  @param fileObject Target file object
  @param model Data model for source code generation
  @throws IOException
  @author vvakame