// single one
        request.getUserProperties().put("maven.versionFilters", "s");
        versionFilter = systemSessionFactory.newRepositorySession(request).getVersionFilter();
        assertNotNull(versionFilter);
        assertTrue(versionFilter instanceof ContextualSnapshotVersionFilter);

        request.getUserProperties().put("maven.versionFilters", "h");

     * line.
     *
     * @return The user properties, never {@code null}.
     */
    public Properties getUserProperties() {
        return request.getUserProperties();
    }

    /**
     * Gets the system properties to use for interpolation and profile activation. The system properties are collected

     */
    @Nonnull
    Map<String, String> getSystemProperties();

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

    @Nonnull
    ModelResolver getModelResolver();

    @Nonnull
    ModelRepositoryHolder getModelRepositoryHolder();

    @Nullable
    ModelCache getModelCache();

    @Nullable

            request.setRepositorySession(session.getRepositorySession());
            request.setSystemProperties(session.getSystemProperties());
            if (request.getUserProperties().isEmpty()) {
                request.setUserProperties(session.getUserProperties());
            }

            MavenExecutionRequest req = session.getRequest();
            if (req != null) {

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

        }

        @Override
        public Settings getSettings() {
            return Settings.newInstance();
        }

        @Override
        public Map<String, String> getUserProperties() {
            return Map.of();
        }

        @Override
        public Map<String, String> getSystemProperties() {
            return systemProperties;
        }

        @Override

        finalConfigProperties.putAll(mergedProps);
        finalConfigProperties.putAll(configProps);

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

        return sessionBuilder;
    }

        valueSources.add(new BuildTimestampValueSource(config.getBuildStartTime(), timestampFormat));
        valueSources.add(modelValueSource1);
        valueSources.add(new MapBasedValueSource(config.getUserProperties()));
        valueSources.add(new MapBasedValueSource(modelProperties));
        valueSources.add(new MapBasedValueSource(config.getExecutionProperties()));
        valueSources.add(new AbstractValueSource(false) {

        RegexBasedInterpolator interpolator = new RegexBasedInterpolator();

        interpolator.addValueSource(new MapBasedValueSource(request.getSession().getUserProperties()));

        interpolator.addValueSource(new MapBasedValueSource(request.getSession().getSystemProperties()));

        try {
            interpolator.addValueSource(new EnvarBasedValueSource());

        request.transformerContextBuilder(modelBuilder.newTransformerContextBuilder());
        request.systemProperties(session.getSystemProperties());
        request.userProperties(session.getUserProperties());
        request.modelCache(DefaultModelCache.newInstance(session, false));
        if (session.getCache() != null) {
            Map<?, ?> map = (Map) session.getCache().get(session, DefaultModelCache.class.getName());