* #create(Object...)}.
   */
  protected abstract List<String> create(String[] elements);

  @Override
  public String[] createArray(int length) {
    return new String[length];
  }

  /** Returns the original element list, unchanged. */
  @Override
  public List<String> order(List<String> insertionOrder) {
    return insertionOrder;
  }

            List<RemoteRepository> repositories,
            Set<String> providedArtifacts,
            List<CoreExtension> configuration,
            Function<String, String> interpolator)
            throws Exception {
        List<CoreExtensionEntry> extensions = new ArrayList<>();

        DependencyFilter dependencyFilter = new ExclusionsDependencyFilter(providedArtifacts);

    /**
     * Pre-ordered list of phases.
     * If not provided, a default order will be computed.
     */
    default Optional<List<String>> orderedPhases() {
        return Optional.empty();
    }

    /**
     * A phase in the lifecycle.
     *
     * A phase is identified by its name. It also contains a list of plugins bound to that phase,

     */
    List<MavenProject> getTopologicallySortedProjects();

    MavenExecutionResult setDependencyResolutionResult(DependencyResolutionResult result);

    DependencyResolutionResult getDependencyResolutionResult();

    // for each exception
    // - knowing what artifacts are missing
    // - project building exception
    // - invalid project model exception: list of markers

    }

    protected ProtoSession(
            RepositorySystemSession session,
            RepositorySystem repositorySystem,
            List<RemoteRepository> repositories,
            List<org.eclipse.aether.repository.RemoteRepository> resolverRepositories,
            Lookup lookup,
            Context context) {

  @CollectionFeature.Require(KNOWN_ORDER)
  public void testForEachKnownOrder() {
    List<Entry<K, V>> entries = new ArrayList<>();
    getMap().forEach((k, v) -> entries.add(entry(k, v)));
    assertEquals(getOrderedElements(), entries);
  }

  @CollectionFeature.Require(absent = KNOWN_ORDER)
  public void testForEachUnknownOrder() {
    List<Entry<K, V>> entries = new ArrayList<>();
    getMap().forEach((k, v) -> entries.add(entry(k, v)));

          </association>
        </field>
      </fields>
      <comment>We could probably have a specific element for a dev mailing list for things like CI,
        and maybe even a specific element for the user and scm mailing lists. Then leave the more
        lose structure for any other type of mailing list.</comment>
      <codeSegments>
        <codeSegment>
          <version>4.0.0+</version>
          <code>

        final List<SortBuilder<?>> list = new ArrayList<>();
        if (defaultSortBuilders != null) {
            stream(defaultSortBuilders).of(stream -> stream.forEach(builder -> list.add(builder)));
        }
        list.add(createFieldSortBuilder(fieldName, SortOrder.DESC.toString().equalsIgnoreCase(order) ? SortOrder.DESC : SortOrder.ASC));
        defaultSortBuilders = list.toArray(new SortBuilder[list.size()]);
    }

    List<T> list = Arrays.asList(inputs);
    doExpectCollects(expectedResult, list);
    if (collector.characteristics().contains(Collector.Characteristics.UNORDERED)) {
      Collections.reverse(list);
      doExpectCollects(expectedResult, list);
    }
    return this;
  }

  private void doExpectCollects(R expectedResult, List<T> inputs) {

    }

    @Override
    public List<ArtifactVersion> retrieveAvailableVersions(
            Artifact artifact, ArtifactRepository localRepository, List<ArtifactRepository> remoteRepositories)
            throws ArtifactMetadataRetrievalException {
        return delegate.retrieveAvailableVersions(artifact, localRepository, remoteRepositories);
    }

    @Override