void withSources(Consumer<ModuleSource> consumer);

    /**
     * Executes an action on the first source found of the following type, if any.
     */
    default <T extends ModuleSource, R> R withSource(Class<T> sourceType, Function<Optional<T>, R> action) {
        return action.apply(getSource(sourceType));
    }

    default <T extends ModuleSource> void withSources(Class<T> sourceType, Consumer<T> consumer) {

    }

    private static Transformer<Object, ModuleComponentResolveMetadata> getKeyToSnapshotableTransformer() {
        return moduleMetadata -> moduleMetadata.getSources().withSource(ModuleDescriptorHashModuleSource.class, source -> {
            return source.map(metadataFileSource -> metadataFileSource.getDescriptorHash().toString() + moduleMetadata.getVariantDerivationStrategy().getClass().getName())

	panic("unimplemented")
}

func (f *recorderResourceManager) ServeHTTP(http.ResponseWriter, *http.Request) {
	panic("unimplemented")
}

func (f *recorderResourceManager) WithSource(source Source) ResourceManager {
	panic("unimplemented")