如何将我的类转换为Room Persistence中的实体？

dependencies {
    implementation "androidx.room:room-runtime:2.3.0"
    annotationProcessor "androidx.room:room-compiler:2.3.0"
}

@Entity(tableName = "users")
public class User {
    @PrimaryKey
    public int id;

    @ColumnInfo(name = "name")
    public String name;
}

@Entity(tableName = "users", indices = {@Index(value = {"name"}, unique = true)})
public class User {
    @PrimaryKey(autoGenerate = true)
    public int id;

    @ColumnInfo(name = "name")
    public String username;
}

@Entity(tableName = "users")
public class User {
    @PrimaryKey
    public int id;

    @ColumnInfo(name = "name")
    public String name;

    @Embedded
    public Address address;
}

public class Address {
    public String street;
    public String city;
    public String country;
}

@Database(entities = {User.class}, version = 1)
public abstract class AppDatabase extends RoomDatabase {
    public abstract UserDao userDao();
}

AppDatabase db = Room.databaseBuilder(getApplicationContext(),
        AppDatabase.class, "my-database").build();
UserDao userDao = db.userDao();