/**
     * 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();

    /**

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

    /**
     * Gets the user properties to use for interpolation and profile activation. The user properties have been

 * <li>unlimited number of version components,</li>
 * <li>version components in the text can be digits or strings,</li>
 * <li>strings are checked for well-known qualifiers and the qualifier ordering is used for version ordering.
 *     Well-known qualifiers (case insensitive) are:<ul>
 *     <li><code>alpha</code> or <code>a</code></li>
 *     <li><code>beta</code> or <code>b</code></li>

            classes[i] = arg == null ? null : arg.getClass();
        }

        return getMostSpecific(methodList, classes);
    }

    /**
     * simple distinguishable exception, used when
     * we run across ambiguous overloading
     */
    static class AmbiguousException extends Exception {

        private static final long serialVersionUID = 751688436639650618L;
    }

    /**
     * Returns the input stream to be used for the Maven execution.
     * If not set, System.in will be used by default.
     *
     * @return the input stream, or null if not set
     */
    @Nullable
    InputStream in();

    /**
     * Returns the output stream to be used for the Maven execution.
     * If not set, System.out will be used by default.
     *

          <required>true</required>
          <description>The name of the property to be used to activate a profile</description>
        </field>
        <field>
          <name>value</name>
          <version>1.0.0</version>
          <type>String</type>
          <description>The value of the property to be used to activate a profile</description>
        </field>
      </fields>
    </class>
    <class>

    public static final String MAVEN_VERSION_FILTERS = "maven.versionFilters";

    /**
     * User property for chained LRM: list of "tail" local repository paths (separated by comma), to be used with
     * {@code org.eclipse.aether.util.repository.ChainedLocalRepositoryManager}.
     * Default value: <code>null</code>, no chained LRM is used.
     *
     * @since 3.9.0
     */
    @Config

                        getLogger().debug(metadata + " could not be found on repository: " + repository.getId());

                        // delete the local copy so the old details aren't used.
                        if (file.exists()) {
                            if (!file.delete()) {
                                // sleep for 10ms just in case this is windows holding a file lock

    when run, you must cause it, when started running for such
    interactive use in the most ordinary way, to print or display an
    announcement including an appropriate copyright notice and a notice
    that there is no warranty (or else, saying that you provide a
    warranty) and that users may redistribute the program under these
    conditions, and telling the user how to view a copy of this License.

<!--
 | This is the configuration file for Maven. It can be specified at two levels:
 |
 |  1. User Level. This settings.xml file provides configuration for a single user,
 |                 and is normally provided in ${user.home}/.m2/settings.xml.
 |
 |                 NOTE: This location can be overridden with the CLI option:
 |
 |                 -s /path/to/user/settings.xml
 |
 |  2. Installation Level.