* from the runtime environment like {@link System#getProperties()} and environment variables.
     *
     * @return The system properties, never {@code null}.
     */
    public Properties getSystemProperties() {
        return request.getSystemProperties();
    }

    public Settings getSettings() {
        return settings;
    }

    public List<MavenProject> getProjects() {
        return projects;
    }

    protected String getOicClientSecret() {
        return ComponentUtil.getSystemProperties().getProperty(OIC_CLIENT_SECRET, StringUtil.EMPTY);
    }

    /**
     * Gets the OpenID Connect token server URL.
     *
     * @return the token server URL
     */
    protected String getOicTokenServerUrl() {
        return ComponentUtil.getSystemProperties().getProperty(OIC_TOKEN_SERVER_URL, "https://accounts.google.com/o/oauth2/token");

     */
    @Nonnull
    List<String> getInactiveProfileIds();

    /**
     * Provides a map of system properties.
     */
    @Nonnull
    Map<String, String> getSystemProperties();

    /**
     * Provides a map of user properties.
     * User properties
     */
    @Nonnull
    Map<String, String> getUserProperties();

    @Nonnull

        setProfiles(request.getProfiles());
        setActiveProfileIds(request.getActiveProfileIds());
        setInactiveProfileIds(request.getInactiveProfileIds());
        setSystemProperties(request.getSystemProperties());
        setUserProperties(request.getUserProperties());
        setRemoteRepositories(request.getRemoteRepositories());
        setPluginArtifactRepositories(request.getPluginArtifactRepositories());

                    if (session != null) {
                        configuration.setSystemProperties(session.getSystemProperties());
                        configuration.setUserProperties(session.getUserProperties());
                    } else {
                        configuration.setSystemProperties(getSystemProperties());
                        configuration.setUserProperties(new Properties());
                    }

        cli.cli(request);
        executionRequest = cli.populateRequest(request);
        assertNull(executionRequest.getLocalRepositoryPath());

        // System-properties override default
        request.getSystemProperties().setProperty(Constants.MAVEN_REPO_LOCAL, "." + File.separatorChar + "custom1");
        executionRequest = cli.populateRequest(request);
        assertNotNull(executionRequest.getLocalRepositoryPath());

        copy.setGoals(original.getGoals());
        copy.setRecursive(original.isRecursive());
        copy.setPom(original.getPom());
        copy.setSystemProperties(original.getSystemProperties());
        copy.setUserProperties(original.getUserProperties());
        copy.setShowErrors(original.isShowErrors());
        copy.setActiveProfiles(original.getActiveProfiles());

     * @param path the path to append to the base URL
     * @return the complete URL
     */
    protected String buildDefaultUrl(final String path) {
        final DynamicProperties systemProperties = ComponentUtil.getSystemProperties();
        String baseUrl = systemProperties.getProperty(SAML_SP_BASE_URL);
        if (StringUtil.isBlank(baseUrl)) {
            baseUrl = "http://localhost:8080";
        }
        if (baseUrl.endsWith("/")) {

        finalConfigProperties.putAll(configProps);

        sessionBuilder.setUserProperties(request.getUserProperties());
        sessionBuilder.setSystemProperties(request.getSystemProperties());
        sessionBuilder.setConfigProperties(finalConfigProperties);

        return sessionBuilder;
    }

    private Path resolve(String string) {

        MavenSession session = legacySupport.getSession();
        if (session != null) {
            request.setRepositorySession(session.getRepositorySession());
            request.setSystemProperties(session.getSystemProperties());
            if (request.getUserProperties().isEmpty()) {
                request.setUserProperties(session.getUserProperties());
            }

            MavenExecutionRequest req = session.getRequest();