if (!request.getRepositorySession().isOffline() && !requests.isEmpty()) {
            DefaultRepositorySystemSession session = new DefaultRepositorySystemSession(request.getRepositorySession());
            session.setUpdatePolicy(RepositoryPolicy.UPDATE_POLICY_ALWAYS);

            results = repositorySystem.resolveMetadata(session, requests);

            return processResults(request, trace, results, null, candidates);
        }

            builder.setAuthentication(session.getAuthenticationSelector().getAuthentication(remoteRepo));
            builder.setProxy(session.getProxySelector().getProxy(remoteRepo));
            remoteRepo = builder.build();
        }
        request.setRepository(remoteRepo);

        DeployResult result;
        try {
            result = repoSystem.deploy(session, request);
        } catch (DeploymentException e) {

@SessionScoped
public class DefaultProjectManager implements ProjectManager {

    private final InternalMavenSession session;
    private final ArtifactManager artifactManager;

    @Inject
    public DefaultProjectManager(InternalMavenSession session, ArtifactManager artifactManager) {
        this.session = session;
        this.artifactManager = artifactManager;
    }

    @Nonnull
    @Override

        InternalSession session = InternalSession.from(request.getSession());
        return session.request(request, this::doBuild);
    }

    protected ProjectBuilderResult doBuild(ProjectBuilderRequest request)
            throws ProjectBuilderException, IllegalArgumentException {
        InternalMavenSession session = InternalMavenSession.from(request.getSession());

     *
     * @param mojos             list of mojos representing a project build
     * @param session           current session
     * @param mojoExecutionRunner mojo execution task which must be invoked by a strategy to actually run it
     * @throws LifecycleExecutionException
     */
    void execute(List<MojoExecution> mojos, MavenSession session, MojoExecutionRunner mojoExecutionRunner)
            throws LifecycleExecutionException;

 * based on the current Maven session and environment.
 *
 * @since 4.0.0
 * @see RequestCache
 */
@Experimental
public interface RequestCacheFactory {

    /**
     * Creates a new RequestCache instance.
     * The created cache should be configured according to the current Maven session
     * and environment settings.
     *
     * @return A new RequestCache instance

                injectMirror(repository, mirror);
            }
        }
    }

    private Mirror getMirror(RepositorySystemSession session, ArtifactRepository repository) {
        if (session != null) {
            org.eclipse.aether.repository.MirrorSelector selector = session.getMirrorSelector();
            if (selector != null) {
                RemoteRepository repo = selector.getMirror(RepositoryUtils.toRepo(repository));

    }

    /**
     * The real session key if the regular session key is actually
     * the encrypted version used for key exchange.
     *
     * @return A <code>byte[]</code> containing the session key.
     */
    public byte[] getMasterKey() {
        return masterKey;
    }

    /**
     * Returns the session key.
     *

     *            null}.
     * @param session The repository session to use for resolving the plugin's main artifact, must not be {@code null}.
     * @return The resolved plugin artifact, never {@code null}.
     * @throws PluginResolutionException If the plugin artifact could not be resolved.
     */
    Artifact resolve(Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session)
            throws PluginResolutionException;

import org.apache.maven.api.annotations.ThreadSafe;

/**
 * Marker interface for all services provided by the {@link Session}.
 * <p>
 * Services can be retrieved from the session using the
 * {@link Session#getService(Class)} method.
 *
 * @since 4.0.0
 * @see Session#getService(Class)
 */
@Experimental
@ThreadSafe