// init composer, set class properties, create source writer
ClassSourceFileComposerFactory composer = new ClassSourceFileComposerFactory(packageName,
className);
composer.addImplementedInterface(ExtensionsLoader.class.getName());
composer.addImport(JSONValue.class.getName());
composer.addImport(JSONString.class.getName());
composer.addImport(JSONNumber.class.getName());
composer.addImport(JSONBoolean.class.getName());
composer.addImport(JSONObject.class.getName());