xml.namespace="http://maven.apache.org/METADATA/${version}"
  xml.schemaLocation="https://maven.apache.org/xsd/repository-metadata-${version}.xsd">
  <id>repository-metadata</id>
  <name>Metadata</name>
  <description><![CDATA[
    <p>Per-directory repository metadata <code>repository-metadata.xml</code>.</p>

- parent POM missing (in both the repository + relative path)
- component not found

Plugins:
- plugin metadata missing
- plugin metadata retrieval problem
- plugin artifact missing
- plugin artifact retrieval problem
- plugin dependency metadata missing
- plugin dependency metadata retrieval problem
- plugin configuration problem

                  <packages>org.apache.maven.api.di</packages>
                </group>
                <group>
                  <title>Maven 4 API - Metadata</title>
                  <packages>org.apache.maven.api.metadata</packages>
                </group>
                <group>
                  <title>Maven 4 API - SPI</title>
                  <packages>org.apache.maven.api.spi</packages>

      <groupId>org.apache.maven</groupId>
      <artifactId>maven-toolchain-builder</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-repository-metadata</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-artifact</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>

    @Nonnull
    Settings getSettings();

    @Nonnull
    LocalRepository getLocalRepository();

    @Nonnull
    List<RemoteRepository> getRemoteRepositories();

    @Nonnull
    SessionData getData();

    /**
     * Returns immutable user properties to use for interpolation. The user properties have been configured directly
     * by the user, e.g. via the {@code -Dkey=value} parameter on the command line.
     *

            }
        }
    }

    private List<?> validationPluginExcludes(RepositorySystemSession session) {
        return (List<?>) session.getData().computeIfAbsent(PLUGIN_EXCLUDES_KEY, () -> parsePluginExcludes(session));
    }

    private List<String> parsePluginExcludes(RepositorySystemSession session) {

    public List<RemoteRepository> getRemoteRepositories() {
        return Collections.unmodifiableList(repositories);
    }

    @Nonnull
    @Override
    public SessionData getData() {
        org.eclipse.aether.SessionData data = session.getData();
        return new SessionData() {
            @Override
            public <T> void set(@Nonnull Key<T> key, @Nullable T value) {
                data.set(key, value);

        request.source(ModelSource.fromPath(src));
        request.validationLevel(ModelBuilderRequest.VALIDATION_LEVEL_MINIMAL);
        request.locationTracking(false);
        request.modelResolver(iSession.getData().get(SessionData.key(ModelResolver.class)));
        request.transformerContextBuilder(modelBuilder.newTransformerContextBuilder());
        request.systemProperties(session.getSystemProperties());