}

            MavenExecutionRequest req = session.getRequest();
            if (req != null) {
                request.setRemoteRepositories(req.getRemoteRepositories());
            }
        } else {
            Properties props = new Properties();
            EnvironmentUtils.addEnvVars(props);
            props.putAll(System.getProperties());

    public Iterator<ResolutionNode> getChildrenIterator() {
        return children.iterator();
    }

    public int getDepth() {
        return depth;
    }

    public List<ArtifactRepository> getRemoteRepositories() {
        return remoteRepositories;
    }

    public boolean isActive() {
        return active;
    }

    public void enable() {
        active = true;

        }

        @Override
        public List<ArtifactVersion> retrieveAvailableVersions(MetadataResolutionRequest request)
                throws ArtifactMetadataRetrievalException {
            return retrieveAvailableVersions(
                    request.getArtifact(), request.getLocalRepository(), request.getRemoteRepositories());
        }
    }

            throws RepositoryMetadataResolutionException {
        ArtifactRepository localRepo = request.getLocalRepository();
        List<ArtifactRepository> remoteRepositories = request.getRemoteRepositories();

        if (!request.isOffline()) {
            Date localCopyLastModified = null;
            if (metadata.getBaseVersion() != null) {

    /**
     * Retrieves a list of remote repositories associated with this session.
     *
     * @return a list of remote repositories
     */
    @Nonnull
    List<RemoteRepository> getRemoteRepositories();

    /**
     * Retrieves the session data associated with this session.
     *
     * @return the session data, never {@code null}
     */
    @Nonnull
    SessionData getData();

    /**