return null;
        }

        MetadataGraph dirtyGraph = getGraph();
        if (dirtyGraph == null) {
            return null;
        }

        return classpathTransformation.transform(dirtyGraph, scope, false);
    }

    // ----------------------------------------------------------------------------
    public MetadataTreeNode getClasspathTree(ArtifactScopeEnum scope)

        return request;
    }

    @Override
    public void injectTransformedArtifacts(RepositorySystemSession session, MavenProject project) throws IOException {}

    @Override
    public void transform(MavenProject project, RepositorySystemSession session, ModelSource src, Path tgt)
            throws ModelBuilderException, XMLStreamException, IOException {

   * Lists#transform}. If only an {@code Iterable} is available, use {@link Iterables#transform}.
   *
   * <p><b>{@code Stream} equivalent:</b> {@link java.util.stream.Stream#map Stream.map}.
   */
  public static <F extends @Nullable Object, T extends @Nullable Object> Collection<T> transform(
      Collection<F> fromCollection, Function<? super F, T> function) {

  --type=data
```

**Step 2: Convert to Fess Format**

Transform documents to include Fess required fields. Example transformation script:

```python
import json

with open('documents.json', 'r') as infile, \
     open('fess-documents.json', 'w') as outfile:
    for line in infile:
        doc = json.loads(line)

        # Transform to Fess format
        fess_doc = {
            "url": doc.get("url", ""),

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package gradlebuild.docs.dsl.docbook


import groovy.transform.CompileStatic
import org.gradle.api.DefaultTask
import org.gradle.api.Project
import org.gradle.api.file.DirectoryProperty
import org.gradle.api.file.RegularFileProperty
import org.gradle.api.tasks.CacheableTask

  }

  @Override
  public final boolean hasPrevious() {
    return backingIterator().hasPrevious();
  }

  @Override
  @ParametricNullness
  public final T previous() {
    return transform(backingIterator().previous());
  }

  @Override
  public final int nextIndex() {
    return backingIterator().nextIndex();
  }

  @Override
  public final int previousIndex() {

  }

  @Override
  public final boolean hasPrevious() {
    return backingIterator().hasPrevious();
  }

  @Override
  @ParametricNullness
  public final T previous() {
    return transform(backingIterator().previous());
  }

  @Override
  public final int nextIndex() {
    return backingIterator().nextIndex();
  }

  @Override
  public final int previousIndex() {

        super.resolveTypes(transformer);
        if (superClassName != null) {
            superClassName = transformer.transform(superClassName);
        }
        for (int i = 0; i < interfaceNames.size(); i++) {
            interfaceNames.set(i, transformer.transform(interfaceNames.get(i)));
        }
        for (PropertyMetaData propertyMetaData : declaredProperties.values()) {

    @Test
    void testCustomLifecycle() throws ComponentLookupException {
        List<Lifecycle> myLifecycles = new ArrayList<>();
        Lifecycle myLifecycle =
                new Lifecycle("etl", Arrays.asList("extract", "transform", "load"), Collections.emptyMap());
        myLifecycles.add(myLifecycle);
        myLifecycles.addAll(defaultLifeCycles.getLifeCycles());

        .onlyIfCached()
        .noTransform()
        .immutable()
        .build()
    assertThat(cacheControl.toString()).isEqualTo(
      "no-cache, no-store, max-age=1, max-stale=2, min-fresh=3, only-if-cached, no-transform, immutable",
    )
    assertThat(cacheControl.noCache).isTrue()
    assertThat(cacheControl.noStore).isTrue()
    assertThat(cacheControl.maxAgeSeconds).isEqualTo(1)
    assertThat(cacheControl.maxStaleSeconds).isEqualTo(2)