Contribution to ApplicationStateManager not called on ApplicationModule

[yazmin georgina quintal]

I have this code con ApplicationModule (T.5.4.3), but I do not see my 
contribution method being called:
    @Contribute(value = ApplicationStateManager.class)
    public static void provideStateCreators(MappedConfiguration<Class, 
ApplicationStateContribution> configuration) {
    
    System.out.println("provideStateCreators");

    configuration.add(Cotizacion.class,
        new ApplicationStateContribution(CayenneConstants.ENTITY, new 
ApplicationStateCreator<Cotizacion>() {
            @Override
            public Cotizacion create() {
            System.out.println("contributeApplicationStateManager.create call");
            return new Cotizacion();
            }
        }
        ));
    }
Thanks. 

Saludos.
 Atte. Yazmín Georgina Quintal Moo 
Local 63 y 64 de Plaza de la Tecnología. Villahermosa, Tab. 
Tel 993 1311688 
Cel. 9931 689207