如何在房间库中使用复杂数据类型的类型转换器？

public class Person {
    public String name;
    public int age;
}

public class PersonConverter {
    @TypeConverter
    public String fromPerson(Person person) {
        Gson gson = new Gson();
        return gson.toJson(person);
    }

    @TypeConverter
    public Person toPerson(String json) {
        Gson gson = new Gson();
        return gson.fromJson(json, Person.class);
    }
}

@Database(entities = {User.class}, version = 1)
@TypeConverters(PersonConverter.class)
public abstract class AppDatabase extends RoomDatabase {
    // ...
}

Person person = new Person();
person.name = "John";
person.age = 25;

// 插入数据
appDatabase.userDao().insertUser(user);

// 查询数据
Person retrievedPerson = appDatabase.userDao().getUser().person;