public <T> T copyAttribute(T t1, T t2) throws IllegalArgumentException, IllegalAccessException {
        Class classz = t1.getClass();
        Field[] fieldArr = classz.getDeclaredFields();
        for(Field  f : fieldArr){
            Object value = f.get(t2);
            if(value != null){
                f.set(t1, value);
            }
        }
        
        return t1;
    }