Builder pattern SELF referencing

class Base implements VariantA<Base>, VariantB<Base>  {

    public Base build() {
        System.out.println("Building in Base class");
        return this;
    }
}

interface VariantA<SELF extends VariantA<SELF>> {

    default SELF withVariantAParam(String param) {
        System.out.println("Here in Variant A class with " + param);
        return (SELF) this;
    }

}

interface VariantB<SELF extends VariantB<SELF>> {

    default SELF withVariantBParam(String param) {
        System.out.println("Here in Variant B class with " + param);
        return (SELF) this;
    }

}

public class Client {
    public static void main(String[] args) {
        new Base()
                .withVariantAParam("foo")
                .withVariantBParam("bar")
                .build();
    }
}