assertNotNull(builder);

        DefaultModelBuildingRequest request = new DefaultModelBuildingRequest();
        request.setModelSource(new StringModelSource(BASE1));
        request.setModelResolver(new CycleInImportsResolver());

        assertThrows(ModelBuildingException.class, () -> builder.build(request));
    }

    static class CycleInImportsResolver extends BaseModelResolver {
        @Override

    @Override
    public ModelResolver getModelResolver() {
        return request.getModelResolver();
    }

    @Override
    public FilterModelBuildingRequest setModelResolver(ModelResolver modelResolver) {
        request.setModelResolver(modelResolver);

        return this;
    }

    @Override
    public ModelBuildingListener getModelBuildingListener() {
        return request.getModelBuildingListener();

        setSystemProperties(request.getSystemProperties());
        setUserProperties(request.getUserProperties());
        setBuildStartTime(request.getBuildStartTime());
        setModelResolver(request.getModelResolver());
        setModelBuildingListener(request.getModelBuildingListener());
        setModelCache(request.getModelCache());
        setWorkspaceModelResolver(request.getWorkspaceModelResolver());

                modelRequest.setUserProperties(new Properties());
                modelRequest.setModelCache(modelCacheFactory.createCache(session));
                modelRequest.setModelResolver(new DefaultModelResolver(
                        session,
                        trace.newChild(modelRequest),
                        request.getRequestContext(),
                        artifactResolver,

     * project directory.
     *
     * @param modelResolver The model resolver to use, never {@code null}.
     * @return This request, never {@code null}.
     */
    ModelBuildingRequest setModelResolver(ModelResolver modelResolver);

    /**
     * Gets the model building listener to notify during the build process.
     *
     * @return The model building listener to notify or {@code null} if none.
     */

                importRequest.setLocationTracking(request.isLocationTracking());

                importRequest.setModelSource(importSource);
                importRequest.setModelResolver(modelResolver.newCopy());

                importResult = build(importRequest, importIds);
            } catch (ModelBuildingException e) {
                problems.addAll(e.getProblems());