/**
     * Creates a {@link DomainObjectSet} for managing objects of the specified type.
     */
    <T> DomainObjectSet<T> newDomainObjectSet(Class<T> elementType);

    <T> NamedDomainObjectSet<T> newNamedDomainObjectSet(Class<T> elementType);

    <T> NamedDomainObjectList<T> newNamedDomainObjectList(Class<T> elementType);

    /**

        return Cast.uncheckedCast(instantiator.newInstance(DefaultDomainObjectSet.class, elementType, collectionCallbackActionDecorator));
    }

    @Override
    public <T> NamedDomainObjectSet<T> newNamedDomainObjectSet(Class<T> elementType) {
        Instantiator instantiator = instantiatorFactory.decorateLenient();