if (javahome == null) {
            throw new MisconfiguredToolchainException(
                    "Java toolchain without the " + JavaToolchainImpl.KEY_JAVAHOME + " configuration element.");
        }
        Path normal = Paths.get(javahome.getValue()).normalize();
        if (Files.exists(normal)) {
            jtc.setJavaHome(Paths.get(javahome.getValue()).normalize().toString());
        } else {

                        Version.BASE,
                        "parent.artifactId",
                        null,
                        "must be changed"
                                + ", the parent element cannot have the same groupId:artifactId as the project.",
                        parent);
            }

            if (equals("LATEST", parent.getVersion()) || equals("RELEASE", parent.getVersion())) {

    </class>
    <class rootElement="true" xml.tagName="settings">
      <name>Settings</name>
      <version>1.0.0+</version>
      <superClass>TrackableBase</superClass>
      <description>
        Root element of the user configuration file.
      </description>
      <fields>
        <field>
          <name>localRepository</name>
          <version>1.0.0+</version>
          <required>true</required>

    @Nonnull
    PathScope getPathScope();

    /**
     * Returns a filter for the types of path (class-path, module-path, …) accepted by the tool.
     * For example, if a Java tools accepts only class-path elements, then the filter should return
     * {@code true} for {@link JavaPathType#CLASSES} and {@code false} for {@link JavaPathType#MODULES}.
     * If no filter is explicitly set, then the default is a filter accepting everything.
     *

        dependencies = new LinkedHashMap<>(count + count / 3);
    }

    /**
     * Adds the given path element to the specified type of path.
     *
     * @param type the type of path (class-path, module-path, …)
     * @param path the path element to add
     */
    private void addPathElement(PathType type, Path path) {

     * The head of returned list is result of {@link Project#getArtifacts()} method, so same applies here: the list can have
     * minimum of one element. The maximum number of elements is in turn dependent on build configuration and lifecycle
     * phase when this method was invoked (i.e. is javadoc jar built and attached, is sources jar built attached, are
     * all the artifact signed, etc.).

                for (Plugin element : tgt) {
                    Object key = getPluginKey().apply(element);
                    Plugin existing = master.get(key);
                    if (existing != null) {
                        element = mergePlugin(element, existing, sourceDominant, context);

                        master.put(key, element);

                        if (!pending.isEmpty()) {

                for (Plugin element : tgt) {
                    Object key = getPluginKey().apply(element);
                    merged.put(key, element);
                }

                Map<Object, Plugin> added = new LinkedHashMap<>();

                for (Plugin element : src) {
                    Object key = getPluginKey().apply(element);
                    Plugin existing = merged.get(key);

        } catch (XMLStreamException e) {
            throw new IOException(e.getMessage(), e);
        }

        if (!"extension".equals(dom.getName())) {
            throw new IOException("Unexpected root element \"" + dom.getName() + "\", expected \"extension\"");
        }

        extensionDescriptor.setExportedPackages(parseStrings(dom.getChild("exportedPackages")));

        File pom = getProject("project-with-additional-lifecycle-elements");
        MavenSession session = createMavenSession(pom);
        assertEquals(
                "project-with-additional-lifecycle-elements",
                session.getCurrentProject().getArtifactId());
        assertEquals("1.0", session.getCurrentProject().getVersion());