assertTrue(transformer.isValidUrl("http://www.example.com"));
        assertTrue(transformer.isValidUrl("http://www.example.com/aaa"));
        assertTrue(transformer.isValidUrl("https://www.example.com"));
        assertTrue(transformer.isValidUrl("://www.example.com"));
        assertTrue(transformer.isValidUrl("//www.example.com"));

        assertFalse(transformer.isValidUrl(null));

     *       Objects.equal}{@code (k1, k2) &&} {@link Objects#equal}{@code (v1, v2)} implies that
     *       {@code Objects.equal(transformer.transform(k1, v1), transformer.transform(k2, v2))}.
     * </ul>
     *
     * @throws NullPointerException if the key or value is null and this transformer does not accept
     *     null arguments
     */
    @ParametricNullness

     *       Objects.equal}{@code (k1, k2) &&} {@link Objects#equal}{@code (v1, v2)} implies that
     *       {@code Objects.equal(transformer.transform(k1, v1), transformer.transform(k2, v2))}.
     * </ul>
     *
     * @throws NullPointerException if the key or value is null and this transformer does not accept
     *     null arguments
     */
    @ParametricNullness

import org.eclipse.aether.util.graph.selector.ExclusionDependencySelector;
import org.eclipse.aether.util.graph.transformer.ChainedDependencyGraphTransformer;
import org.eclipse.aether.util.graph.transformer.ConflictResolver;
import org.eclipse.aether.util.graph.transformer.NearestVersionSelector;
import org.eclipse.aether.util.graph.transformer.SimpleOptionalitySelector;
import org.eclipse.aether.util.repository.SimpleArtifactDescriptorPolicy;

    final EntryTransformer<? super K, ? super V1, V2> transformer;

    TransformedEntriesMultimap(
        Multimap<K, V1> fromMultimap,
        final EntryTransformer<? super K, ? super V1, V2> transformer) {
      this.fromMultimap = checkNotNull(fromMultimap);
      this.transformer = checkNotNull(transformer);
    }

    Collection<V2> transform(@ParametricNullness K key, Collection<V1> values) {

 */
@Named
@Singleton
@Deprecated(since = "4.0.0")
public class DefaultModelReader implements ModelReader {
    private final ModelSourceTransformer transformer;

    @Inject
    public DefaultModelReader(ModelSourceTransformer transformer) {
        this.transformer = transformer;
    }

    @Override
    public Model read(File input, Map<String, ?> options) throws IOException {

                accessResult.setAccessResultData(null);
                try {
                    final Transformer transformer = ComponentUtil.getComponent(accessResultData.getTransformerName());
                    if (transformer == null) {
                        // no transformer
                        logger.warn("No transformer: {}", accessResultData.getTransformerName());
                        continue;
                    }

import org.eclipse.aether.util.graph.selector.ExclusionDependencySelector;
import org.eclipse.aether.util.graph.transformer.ChainedDependencyGraphTransformer;
import org.eclipse.aether.util.graph.transformer.ConflictResolver;
import org.eclipse.aether.util.graph.transformer.NearestVersionSelector;
import org.eclipse.aether.util.graph.transformer.SimpleOptionalitySelector;
import org.eclipse.aether.util.repository.SimpleArtifactDescriptorPolicy;

        try {
            Model model = readFileModel(request, problems);

            try {
                if (transformer != null && context != null) {
                    transformer.transform(pomFile, context, model);
                }
            } catch (TransformerException e) {
                problems.add(

        }
    }

    static class ExtensionInterpolator extends MavenTransformer {
        ExtensionInterpolator(Function<String, String> transformer) {
            super(transformer);
        }

        public XmlNode transform(XmlNode node) {
            return super.transform(node);
        }
    }