@Embeddable
public class Foo {
    String foo;
}

@Entity
public class Bar {
    String bar;
}

@StaticMetamodel(Foo.class)
public abstract class Foo_ {

}

@StaticMetamodel(Bar.class)
public abstract class Bar_ {

	public static volatile SingularAttribute<Bar, String> bar;

        public static final String BAR = "bar";
}