assertNotNull(builder);

        DefaultSettingsBuildingRequest request = new DefaultSettingsBuildingRequest();
        request.setSystemProperties(System.getProperties());
        request.setUserSettingsFile(getSettings("simple"));

        SettingsBuildingResult result = builder.build(request);
        assertNotNull(result);
        assertNotNull(result.getEffectiveSettings());
    }

                "${maven.conf}/settings.xml", "maven.conf", MavenSettingsBuilder.ALT_GLOBAL_SETTINGS_XML_LOCATION);

        SettingsBuildingRequest request = new DefaultSettingsBuildingRequest();
        request.setUserSettingsFile(userSettingsFile);
        request.setGlobalSettingsFile(globalSettingsFile);
        request.setSystemProperties(SystemProperties.getSystemProperties());
        return build(request);
    }

        return this;
    }

    @Override
    public File getUserSettingsFile() {
        return userSettingsFile;
    }

    @Override
    public DefaultSettingsBuildingRequest setUserSettingsFile(File userSettingsFile) {
        this.userSettingsFile = userSettingsFile;

        return this;
    }

    @Override
    public SettingsSource getUserSettingsSource() {

     *
     * @param userSettingsFile The user settings file, may be {@code null} to disable user settings.
     * @return This request, never {@code null}.
     */
    SettingsBuildingRequest setUserSettingsFile(File userSettingsFile);

    /**
     * Gets the user settings source.
     *
     * @return The user settings source or {@code null} if none.
     */
    SettingsSource getUserSettingsSource();