}
    }

    //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();
    }

    @Override
    public ModelPromise getPromise() {
        return target == null ? super.getPromise() : target.getPromise();
    }

    @Override
    public ModelAdapter getAdapter() {
        return target == null ? super.getAdapter() : target.getAdapter();
    }

    @Override
    public void addLink(ModelRegistration registration) {
        throw new UnsupportedOperationException();
    }

    @Override

    }

    @Override
    public Optional<String> getValueDescription() {
        this.ensureUsable();
        return getAdapter().getValueDescription(this);
    }

    @Override
    public Optional<String> getTypeDescription() {
        this.ensureUsable();
        ModelView<?> modelView = getAdapter().asImmutable(ModelType.untyped(), this, null);
        if (modelView != null) {
            try {

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

    @Nullable
    private GradleEnterprisePluginAdapter adapter;

    // Indicates plugin checked in, but was unsupported
    private boolean unsupported;

    @Nullable
    public GradleEnterprisePluginAdapter getAdapter() {
        return adapter;
    }

    public void registerAdapter(GradleEnterprisePluginAdapter adapter) {
        if (unsupported) {
            throw new IllegalStateException("plugin already noted as unsupported");

            return (TypeAdapter<T>) new SingleImplTypeAdapter<>(
                ProblemDefinition.class,
                DefaultProblemDefinition.class,
                gson.getAdapter(JsonElement.class),
                gson.getDelegateAdapter(this, TypeToken.get(DefaultProblemDefinition.class))).nullSafe();
        } else {
            return null;
        }
    }