* particular, this interface can be changed or deleted without prior notice.
 *
 * @since 3.0
 */
public interface LegacySupport {

    /**
     * Sets the currently active session. Some legacy components are basically stateful and their API is missing

@Named
@Singleton
@Deprecated
public class DefaultArtifactInstaller extends AbstractLogEnabled implements ArtifactInstaller {

    @Inject
    private RepositorySystem repoSystem;

    @Inject
    private LegacySupport legacySupport;

    /** @deprecated we want to use the artifact method only, and ensure artifact.file is set correctly. */
    @Deprecated
    @Override

public class DefaultArtifactRepositoryFactory implements ArtifactRepositoryFactory {

    @Inject
    private org.apache.maven.repository.legacy.repository.ArtifactRepositoryFactory factory;

    @Inject
    private LegacySupport legacySupport;

    @Inject
    private PlexusContainer container;

    @Override
    public ArtifactRepositoryLayout getLayout(String layoutId) throws UnknownRepositoryLayoutException {

 */
@Named
@Deprecated
public class DefaultArtifactDeployer extends AbstractLogEnabled implements ArtifactDeployer {

    @Inject
    private RepositorySystem repoSystem;

    @Inject
    private LegacySupport legacySupport;

    private Map<Object, MergeableMetadata> relatedMetadata = new ConcurrentHashMap<>();

    /**
     * @deprecated we want to use the artifact method only, and ensure artifact.file is set

    private final LegacySupport legacySupport;

    private MavenRepositorySystem mavenRepositorySystem;

    @Inject
    public MavenMetadataSource(
            RepositoryMetadataManager repositoryMetadataManager,
            ArtifactFactory artifactFactory,
            ProjectBuilder projectBuilder,
            MavenMetadataCache cache,
            LegacySupport legacySupport,

            throw new IllegalStateException(e);
        }
    }

    private static RepositorySystemSession rss(PlexusContainer c) {
        try {
            LegacySupport legacySupport = c.lookup(LegacySupport.class);

            return legacySupport.getRepositorySession();
        } catch (ComponentLookupException e) {
            throw new IllegalStateException(e);
        }
    }

            ArtifactFactory artifactFactory,
            ProjectBuilder projectBuilder,
            MavenMetadataCache cache,
            LegacySupport legacySupport,
            MavenRepositorySystem mavenRepositorySystem) {
        super(repositoryMetadataManager, artifactFactory, projectBuilder, cache, legacySupport, mavenRepositorySystem);
    }

        LegacySupport legacySupport = container.lookup(LegacySupport.class);
        DefaultMavenExecutionRequest mavenExecutionRequest = new DefaultMavenExecutionRequest();
        MavenSession mavenSession =
                new MavenSession(container, session, mavenExecutionRequest, new DefaultMavenExecutionResult());
        legacySupport.setSession(mavenSession);

    private final LegacySupport legacySupport;

    @Inject
    public DefaultPluginManager(
            PlexusContainer container,
            MavenPluginManager pluginManager,
            PluginVersionResolver pluginVersionResolver,
            PluginPrefixResolver pluginPrefixResolver,
            LegacySupport legacySupport) {
        this.container = container;

    private final MavenPluginManager mavenPluginManager;
    private final LegacySupport legacySupport;
    private final MojoExecutionScope scope;
    private final MojoExecutionListener mojoExecutionListener;

    @Inject
    public DefaultBuildPluginManager(
            MavenPluginManager mavenPluginManager,
            LegacySupport legacySupport,
            MojoExecutionScope scope,