UnaryOperator<String> callback = v -> {
            String r = request.getUserProperties().getProperty(v);
            if (r == null) {
                r = request.getSystemProperties().getProperty(v);
            }
            return r != null ? r : v;
        };
        return v -> interpolator.interpolate(v, callback);
    }

    static class SimpleSession extends DefaultSession {

        }

        final CrawlingInfoHelper crawlingInfoHelper = ComponentUtil.getCrawlingInfoHelper();
        final DynamicProperties systemProperties = ComponentUtil.getSystemProperties();

        if (StringUtil.isNotBlank(options.propertiesPath)) {
            systemProperties.reload(options.propertiesPath);
        } else {
            try {

                // properties in dependencies the user does not know. See MNG-7563 for details.
                modelRequest.setSystemProperties(
                        toProperties(session.getUserProperties(), session.getSystemProperties()));
                modelRequest.setUserProperties(new Properties());
                modelRequest.setModelCache(modelCacheFactory.createCache(session));

        UnaryOperator<String> callback = v -> {
            String r = request.getUserProperties().getProperty(v);
            if (r == null) {
                r = request.getSystemProperties().getProperty(v);
            }
            return r != null ? r : v;
        };
        return v -> interpolator.interpolate(v, callback);
    }

    static class SimpleSession extends DefaultSession {

        try (FileOutputStream out = new FileOutputStream(propFile)) {
            final Properties prop = new Properties();
            prop.putAll(ComponentUtil.getSystemProperties());
            final LaJobRuntime jobRuntime = ComponentUtil.getJobHelper().getJobRuntime();
            if (jobRuntime != null) {

        // getExecutionProperties is deprecated in MavenSession.
        //
        this.properties.putAll(session.getUserProperties());
        this.properties.putAll(session.getSystemProperties());

        String basedir = null;

        if (project != null) {
            File projectFile = project.getBasedir();

            // this should always be the case for non-super POM instances...

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

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

         * @return The property value or the default value
         */
        protected String getProperty(final String key, final String defaultValue) {
            return ComponentUtil.getSystemProperties().getProperty(key, defaultValue);
        }

        /**
         * Resolves a resource path to an absolute file path.
         *
         * @param path The resource path to resolve

        request.session(iSession);
        request.source(src);
        request.locationTracking(false);
        request.systemProperties(session.getSystemProperties());
        request.userProperties(session.getUserProperties());
        request.lifecycleBindingsInjector(lifecycleBindingsInjector::injectLifecycleBindings);
        ModelBuilder.ModelBuilderSession mbSession =

        final ZipEntry entry = new ZipEntry(id + "/system.properties");
        try {
            zos.putNextEntry(entry);
            ComponentUtil.getSystemProperties().store(zos, getHostInfo());
        } catch (final IOException e) {
            logger.warn("Failed to access system.properties.", e);
        }
    }

    /**