"type": "object",
                    "properties": {"message": {"title": "Message", "type": "string"}},
                },
                "User": {
                    "title": "User",
                    "required": ["username", "email"],
                    "type": "object",
                    "properties": {
                        "username": {"title": "Username", "type": "string"},

                "Body_compute_b_compute__post": {
                    "title": "Body_compute_b_compute__post",
                    "required": ["a", "b"],
                    "type": "object",
                    "properties": {
                        "a": {"title": "A", "type": "integer"},
                        "b": {"title": "B", "type": "string"},
                    },
                },

        }

        return this;
    }

    @Override
    public Properties getUserProperties() {
        return userProperties;
    }

    @Override
    public ProjectBuildingRequest setUserProperties(Properties userProperties) {
        if (userProperties != null) {
            this.userProperties = new Properties();
            this.userProperties.putAll(userProperties);
        } else {

    private final MavenBuildTimestamp mavenBuildTimestamp;

    BuildTimestampValueSource(Date startTime, Properties properties) {
        super(false);
        this.mavenBuildTimestamp = new MavenBuildTimestamp(startTime, properties);
    }

    @Override
    public Object getValue(String expression) {
        if ("build.timestamp".equals(expression) || "maven.build.timestamp".equals(expression)) {

                    "required": IsList(
                        "username", "password", "email", check_order=False
                    ),
                    "type": "object",
                    "properties": {
                        "username": {"title": "Username", "type": "string"},
                        "password": {"title": "Password", "type": "string"},
                        "email": {

                        },
                    },
                }
            }
        },
        "components": {
            "schemas": {
                "CompanyForm": {
                    "properties": {
                        "company_name": {"type": "string", "title": "Company Name"},
                        "industry": {"type": "string", "title": "Industry"},
                    },

    /**
     * Returns immutable user properties to use for interpolation. The user properties have been configured directly
     * by the user, e.g. via the {@code -Dkey=value} parameter on the command line.
     *
     * @return the user properties, never {@code null}
     */
    @Nonnull
    Map<String, String> getUserProperties();

    /**

 * <tr><td><code>*</code></td>                 <td></td>               <td>user properties</td></tr>
 * <tr><td><code>*</code></td>                 <td></td>               <td>system properties</td></tr>
 * <tr><td><code>*</code></td>                 <td></td>               <td>project properties</td></tr>
 * </table>
 *
 * @see Session
 * @see Project
 * @see org.apache.maven.api.settings.Settings

        Properties userProperties = new Properties();
        Map<String, String> paths = context.extraInterpolationSource();

        // ----------------------------------------------------------------------
        // Options that are set on the command line become system properties
        // and therefore are set in the session properties. System properties
        // are most dominant.

    }

    private
    fun createProperties() = Properties().also { properties ->
        properties["runtime"] = runtime.get().joinToString(",")
        properties["projects"] = projects.get().joinToString(",")
        optionalProjects.get().takeIf { it.isNotEmpty() }?.let { optional ->
            properties["optional"] = optional.joinForProperties()
        }
    }

    private