assertEquals("lib/tools.jar", config0.getChild("toolsJar").getValue());
            assertEquals(2, config0.getChildCount());
            Xpp3Dom config1 = (Xpp3Dom) jdks.getToolchains().get(1).getConfiguration();
            assertEquals(2, config1.getChildCount());
            assertEquals("lib/classes.jar", config1.getChild("toolsJar").getValue());
            assertEquals(2, jdksExtend.getToolchains().size());

        this.listener = listener;
    }

    /**
     * Builds the properties of the given class
     */
    void build(ClassDoc classDoc) {
        Element thead = getChild(classDoc.getPropertiesTable(), "thead");
        Element tr = getChild(thead, "tr");
        List<Element> header = children(tr, "td");
        if (header.size() < 1) {

                if (childElement.getTagName().equals(childName)) {
                    matches.add(childElement);
                }
            }
        }
        return matches;
    }

    protected Element getChild(Element element, String childName) {
        Element child = findChild(element, childName);
        if (child != null) {
            return child;
        }

        assertNotNull(md.getMojoConfiguration());
        assertEquals(1, md.getMojoConfiguration().getChildCount());

        PlexusConfiguration pc = md.getMojoConfiguration().getChild(0);

        assertEquals("${jar.finalName}", pc.getValue());
        assertEquals("${project.build.finalName}", pc.getAttribute("default-value"));
        assertEquals("java.lang.String", pc.getAttribute("implementation"));

        }
    }

    /**
     * Get a specific child
     *
     * @param name child name
     * @return file info or null if not found
     */
    public FileInfo getChild(String name) {
        lock.readLock().lock();
        try {
            lastAccessTime = System.currentTimeMillis();
            return children.get(name);
        } finally {
            lock.readLock().unlock();

    @Nonnull
    default List<XmlNode> getChildren() {
        return children();
    }

    @Deprecated(since = "4.0.0", forRemoval = true)
    @Nullable
    default XmlNode getChild(String name) {
        return child(name);
    }

    @Deprecated(since = "4.0.0", forRemoval = true)
    @Nullable
    default Object getInputLocation() {
        return inputLocation();
    }

        mojo.setGoal(c.getChild("goal").getValue());

        mojo.setImplementation(c.getChild("implementation").getValue());

        PlexusConfiguration langConfig = c.getChild("language");

        if (langConfig != null) {
            mojo.setLanguage(langConfig.getValue());
        }

        PlexusConfiguration configuratorConfig = c.getChild("configurator");

            lastAccessTime = System.currentTimeMillis();
            return new ArrayList<>(children.values());
        } finally {
            lock.readLock().unlock();
        }
    }
    
    public FileInfo getChild(String name) {
        lock.readLock().lock();
        try {
            lastAccessTime = System.currentTimeMillis();
            return children.get(name);
        } finally {
            lock.readLock().unlock();

                            headers.put(
                                    property.getChild("name").getValue(),
                                    property.getChild("value").getValue());
                        }
                    }
                }

                PlexusConfiguration connectTimeoutXml = config.getChild("connectTimeout", false);
                if (connectTimeoutXml != null) {

        Xpp3Dom conf = (Xpp3Dom)
                result.getEffectiveModel().getBuild().getPlugins().get(0).getConfiguration();
        assertNotNull(conf);
        assertEquals("1.5", conf.getChild("source").getValue());
        assertEquals("  1.5  ", conf.getChild("target").getValue());
    }

    @Test
    void testPomChanges() throws Exception {