+ "      </plugin>\n"
                + "    </plugins>\n"
                + "  </build>\n"
                + "</project>";

        Model model = fromXml(xml);
        Plugin plugin = model.getBuild().getPlugins().get(0);
        XmlNode node = plugin.getConfiguration();
        assertNotNull(node);
        assertEquals("http://maven.apache.org/POM/4.0.0", node.namespaceUri());
        assertEquals("m", node.prefix());

        Reporting reporting = model.getReporting();

        if (reporting != null) {
            for (ReportPlugin reportPlugin : reporting.getPlugins()) {
                Xpp3Dom parentDom = (Xpp3Dom) reportPlugin.getConfiguration();

                if (parentDom != null) {
                    for (ReportSet execution : reportPlugin.getReportSets()) {

            Build build = request.getPom().getBuild();

            result = resolveFromProject(request, build.getPlugins());

            if (result == null && build.getPluginManagement() != null) {
                result = resolveFromProject(request, build.getPluginManagement().getPlugins());
            }
        }

        return result;
    }

        addPluginMapping(goalPrefix, artifactId, artifactId);
    }

    public void addPluginMapping(String goalPrefix, String artifactId, String name) {
        List<Plugin> plugins = getMetadata().getPlugins();
        boolean found = false;
        for (Iterator<Plugin> i = plugins.iterator(); i.hasNext() && !found; ) {
            Plugin plugin = i.next();
            if (plugin.getPrefix().equals(goalPrefix)) {

        assertEquals("4.0.0", project4.getModelVersion());

        Build build = project4.getBuild();
        List<Plugin> plugins = build.getPlugins();

        Map<String, Integer> validPluginCounts = new HashMap<>();

        String testPluginArtifactId = "maven-compiler-plugin";

        // this is the plugin we're looking for.

        MavenProject p1 = new MavenProject();
        p1.setGroupId("g");
        p1.setArtifactId("p1");
        p1.getBuild().getPlugins().add(new Plugin(org.apache.maven.api.model.Plugin.newBuilder()
                .groupId("g").artifactId("p2")
                .
                .build()))
        MavenProject p2 = new MavenProject();

         * not interested in any of the executions bound to it.
         */

        for (Plugin plugin : project.getBuild().getPlugins()) {
            for (PluginExecution execution : plugin.getExecutions()) {
                // if the phase is specified then I don't have to go fetch the plugin yet and pull it down

                    plugin.setConfiguration(new Xpp3Dom(configuration));
                }
                extensionPlugins.add(plugin);
            }

            for (Plugin plugin : build.getPlugins()) {
                if (plugin.isExtensions()) {
                    extensionPlugins.add(plugin);
                }
            }
        }

        if (extensionPlugins.isEmpty()) {

    }

    public boolean merge( Metadata sourceMetadata )
    {
        boolean changed = false;

        for ( Plugin plugin : sourceMetadata.getPlugins() )
        {
            boolean found = false;

            for ( Plugin preExisting : getPlugins() )
            {
                if ( java.util.Objects.equals( preExisting.getPrefix(), plugin.getPrefix() ) )
                {
                    found = true;

        Plugin pluginInPom = findPlugin(plugin, project.getBuildPlugins());

        if (pluginInPom == null && project.getPluginManagement() != null) {
            pluginInPom = findPlugin(plugin, project.getPluginManagement().getPlugins());
        }

        if (pluginInPom != null) {
            if (plugin.getVersion() == null) {
                plugin.setVersion(pluginInPom.getVersion());
            }