@Target({ElementType.TYPE_USE,ElementType.TYPE_PARAMETER})
public @interface TemplateCollection {
    String key() default "";
}

List<Message> messages = new @TemplateCollection(key = "Chapters") ArrayList<>();
        messages.add(new Message("title1", "content1"));
        messages.add(new Message("title2", "content2"));

ArrayList<Chapter> res = Mapper.map((List)messages);

public static ArrayList<Chapter> map(Object object) throws SerializationException {

    try {
        Class<?> demoClassObj = object.getClass();
        Annotation[] annotations = demoClassObj.getAnnotations(); <<< always Zero

        return null;

    } catch (Exception e) {
        throw new SerializationException(e.getMessage());
    }
}