* User properties
     */
    @Nonnull
    Map<String, String> getUserProperties();

    @Nonnull
    RepositoryMerging getRepositoryMerging();

    @Nullable
    ModelTransformer getLifecycleBindingsInjector();

    @Nonnull
    static ModelBuilderRequest build(@Nonnull ModelBuilderRequest request, @Nonnull ModelSource source) {
        return builder(requireNonNull(request, "request cannot be null"))