return this;
    }

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

        return this;
    }

    @Override

        activator = null;
    }

    protected ProfileActivationContext newContext(final Properties userProperties, final Properties systemProperties) {
        DefaultProfileActivationContext context = new DefaultProfileActivationContext();
        return context.setUserProperties(userProperties).setSystemProperties(systemProperties);
    }

    public Properties getUserProperties() {
        return request.getUserProperties();
    }

    @Override
    public FilterModelBuildingRequest setUserProperties(Properties userProperties) {
        request.setUserProperties(userProperties);

        return this;
    }

    @Override
    public Date getBuildStartTime() {
        return request.getBuildStartTime();
    }

    @Override

    ProjectBuilderConfiguration setLocalRepository(ArtifactRepository localRepository);

    ProjectBuilderConfiguration setUserProperties(Properties userProperties);

    ProjectBuilderConfiguration setExecutionProperties(Properties executionProperties);

    Date getBuildStartTime();

    ProjectBuilderConfiguration setBuildStartTime(Date buildStartTime);

            MavenPropertiesLoader.loadProperties(userProperties, propertiesFile, callback, false);
        } catch (IOException e) {
            throw new IllegalStateException("Error loading properties from " + propertiesFile, e);
        }

        // CLI specified properties are most dominant
        userProperties.putAll(userSpecifiedProperties);

        return toMap(userProperties);
    }

    protected LayeredOptions(List<O> options) {
        this.options = new ArrayList<>(options);
    }

    @Override
    public Optional<Map<String, String>> userProperties() {
        return collectMapIfPresentOrEmpty(Options::userProperties);
    }

    @Override
    public String source() {
        return String.format(
                "layered(%s)", options.stream().map(Options::source).toList());
    }

     * on his discretion, e.g. via the {@code -Dkey=value} parameter on the command line.
     *
     * @param userProperties The user properties, may be {@code null}.
     * @return This request, never {@code null}.
     */
    SettingsBuildingRequest setUserProperties(Properties userProperties);

     * These properties can be set using the -D command-line option.
     *
     * @return an unmodifiable map of user properties
     */
    @Nonnull
    Map<String, String> userProperties();

    /**
     * Returns a map of system properties for the Maven execution.
     * These include both Java system properties and Maven-specific system properties.
     *

            Properties executionProperties,
            Properties userProperties,
            Date startTime) {
        this.container = container;
        this.settings = settings;
        this.executionProperties = executionProperties;
        this.request = new DefaultMavenExecutionRequest();
        this.request.setUserProperties(userProperties);
        this.request.setLocalRepository(localRepository);

     * line.
     *
     * @param userProperties The user properties, may be {@code null}.
     * @return This request, never {@code null}.
     */
    ModelBuildingRequest setUserProperties(Properties userProperties);

    /**
     * Gets the start time of the build.
     *