under the License.
-->

<toolchains>
  <toolchain>
     <type>basic</type>
     <configuration>
       <user>true</user>
     </configuration>
  </toolchain>
  <toolchain>
     <type>rare</type>
     <configuration>
       <user>true</user>
     </configuration>
  </toolchain>

        Files.createDirectories(mavenConf);
        Path mavenUserProps = mavenConf.resolve("maven.properties");
        Files.writeString(mavenUserProps, "${includes} = ?\"/user/ma ven.properties\",  ?/foo/bar\n");
        Path userDirectory = fs.getPath("/user");
        Files.createDirectories(userDirectory);
        Path propsPath = userDirectory.resolve("ma ven.properties");

    /**
     * Gets the user properties to use for interpolation. The user properties have been configured directly by the user
     * on his discretion, e.g. via the {@code -Dkey=value} parameter on the command line.
     *
     * @return The user properties, never {@code null}.
     */
    Properties getUserProperties();

    /**

    public static final String MAVEN_INSTALLATION_CONF = "maven.installation.conf";

    /**
     * Maven user configuration directory.
     *
     * @since 4.0.0
     */
    @Config(defaultValue = "${user.home}/.m2")
    public static final String MAVEN_USER_CONF = "maven.user.conf";

    /**
     * Maven project configuration directory.
     *
     * @since 4.0.0
     */

     * @throws IOException if any
     * @throws XmlPullParserException if any
     */
    Settings buildSettings(File userSettingsFile) throws IOException, XmlPullParserException;

    /**
     * @param userSettingsFile a given user settings file
     * @param useCachedSettings if true, doesn't reload the user settings
     * @return a <code>Settings</code> object from the user settings file.
     * @throws IOException if any

		<packaging.fess.user>fess</packaging.fess.user>
		<packaging.fess.group>fess</packaging.fess.group>
		<packaging.fess.pid.dir>/var/run/fess</packaging.fess.pid.dir>
		<packaging.fess.systemd.dir>/usr/lib/systemd/system</packaging.fess.systemd.dir>
		<packaging.fess.systemd.sysctl.dir>/usr/lib/sysctl.d</packaging.fess.systemd.sysctl.dir>
		<packaging.fess.tmpfilesd.dir>/usr/lib/tmpfiles.d</packaging.fess.tmpfilesd.dir>

That way, you can create a token with an expiration of, let's say, 1 week. And then when the user comes back the next day with the token, you know that user is still logged in to your system.

    /**
     * Gets the user toolchains source.
     *
     * @return The user toolchains source or {@code null} if none.
     */
    Source getUserToolchainsSource();

    /**
     * Sets the user toolchains source. If both user toolchains and a global toolchains are given, the user toolchains
     * take precedence.
     *

    /**
     * Gets the user properties to use for interpolation and profile activation. The user properties have been
     * configured directly by the user on his discretion, e.g. via the {@code -Dkey=value} parameter on the command
     * line.
     *
     * @return The user properties, never {@code null}.
     */
    Properties getUserProperties();

    /**

    /**
     * Send a message (and accompanying exception) to the user in the <b>debug</b> error level.<br>
     * The error's stacktrace will be output when this error level is enabled.
     *
     * @param content
     * @param error
     */
    void debug(CharSequence content, Throwable error);

    /**
     * Send an exception to the user in the <b>debug</b> error level.<br>