}
    }

    //region implementations delegating to adaptee
    @Override
    public MetaClass getAdaptee() {
        return adaptee;
    }

    @Override
    public void setAdaptee(MetaClass metaClass) {
        adaptee = metaClass;
    }

    @Override
    public synchronized void initialize() {
        this.adaptee.initialize();
    }

        ModelView<? extends T> modelView;
        if (isMutable()) {
            modelView = getAdapter().asMutable(type, this, ruleDescriptor);
        } else {
            modelView = getAdapter().asImmutable(type, this, ruleDescriptor);
        }
        if (modelView == null) {