@Deprecated
public interface ProjectBuilderConfiguration {

    ArtifactRepository getLocalRepository();

    ProfileManager getGlobalProfileManager();

    Properties getUserProperties();

    Properties getExecutionProperties();

    ProjectBuilderConfiguration setGlobalProfileManager(ProfileManager globalProfileManager);

    ProjectBuilderConfiguration setLocalRepository(ArtifactRepository localRepository);

        if (userProperties == null) {
            userProperties = new Properties();
        }

        return userProperties;
    }

    @Override
    public Properties getExecutionProperties() {
        return executionProperties;
    }

    @Override
    public ProjectBuilderConfiguration setExecutionProperties(Properties executionProperties) {
        this.executionProperties = executionProperties;

        valueSources.add(new MapBasedValueSource(modelProperties));
        valueSources.add(new MapBasedValueSource(config.getExecutionProperties()));
        valueSources.add(new AbstractValueSource(false) {

            @Override
            public Object getValue(String expression) {
                return config.getExecutionProperties().getProperty("env." + expression);
            }
        });
        valueSources.add(modelValueSource2);

        request.setBuildStartTime(configuration.getBuildStartTime());
        request.setUserProperties(configuration.getUserProperties());
        request.setSystemProperties(configuration.getExecutionProperties());

        ProfileManager profileManager = configuration.getGlobalProfileManager();
        if (profileManager != null) {
            request.setActiveProfileIds(profileManager.getExplicitlyActivatedIds());

        this.properties = new Properties();
        this.project = session.getCurrentProject();

        //
        // Maven4: We may want to evaluate how this is used but we add these separate as the
        // getExecutionProperties is deprecated in MavenSession.
        //
        this.properties.putAll(session.getUserProperties());
        this.properties.putAll(session.getSystemProperties());

        String basedir = null;

        return request.isProjectPresent();
    }

    /**
     * @deprecated Use either {@link #getUserProperties()} or {@link #getSystemProperties()}.
     */
    @Deprecated
    public Properties getExecutionProperties() {
        return executionProperties;
    }

    @Deprecated
    public PlexusContainer getContainer() {
        return container;
    }

    @Deprecated