Pattern Builder Multiple Returns

I have a class builder that is responsible for returning an object it builds:

public class ObjetoBuilder {

    private Objeto objeto; 

    public ObjetoBuilder() {
        objeto = new Objeto();
    }

    public ObjetoBuilder adicionarId(Long id) {
        if (id != null) objeto.setId(id);
        return this;
    }

    public Objeto constroi() {
        return objeto;
    }
}

Doubt

Is it a good practice to have more than one build method in a builder ? For example:

public class ObjetoBuilder {
    ...
    public Objeto controi() {
        return objeto;
    }

    public List<Objeto> constroiLista(){
        return Arrays.asList(objeto);
    }

    public String constroiJson() {
        return new Gson().toJson(objeto);
    }

    public String controiXml() {
        return new XStream().toXML(objeto);
    }
}