this.executionRoot = executionRoot;
    }

    public String getDefaultGoal() {
        return getBuild() != null ? getBuild().getDefaultGoal() : null;
    }

    public Plugin getPlugin(String pluginKey) {
        org.apache.maven.api.model.Plugin plugin =
                getBuild().getDelegate().getPluginsAsMap().get(pluginKey);
        return plugin != null ? new Plugin(plugin, getBuild()) : null;

        Build build = model.getBuild();

        if (build != null) {
            expand(build.getPlugins());

            PluginManagement pluginManagement = build.getPluginManagement();

            if (pluginManagement != null) {
                expand(pluginManagement.getPlugins());
            }
        }
    }

    private void expand(List<Plugin> plugins) {

        for (Plugin plugin : build.getPlugins()) {
            if (isSitePlugin(plugin)) {
                return plugin;
            }
        }

        PluginManagement pluginManagement = build.getPluginManagement();
        if (pluginManagement != null) {
            for (Plugin plugin : pluginManagement.getPlugins()) {
                if (isSitePlugin(plugin)) {

            }
        }

        private void mergePluginContainerPlugins(PluginContainer target, PluginContainer source) {
            List<Plugin> src = source.getPlugins();
            if (!src.isEmpty()) {
                List<Plugin> tgt = target.getPlugins();

                Map<Object, Plugin> managedPlugins = new LinkedHashMap<>(src.size() * 2);

                Map<Object, Object> context = Collections.emptyMap();

                PluginContainer target, PluginContainer source, boolean sourceDominant, Map<Object, Object> context) {
            List<Plugin> src = source.getPlugins();
            if (!src.isEmpty()) {
                List<Plugin> tgt = target.getPlugins();
                Map<Object, Plugin> master = new LinkedHashMap<>(tgt.size() * 2);

                for (Plugin element : tgt) {

        plugin.setArtifactId(pluginInfo.artifactId);
        plugin.setName(pluginInfo.name);
        result.getPlugins().add(plugin);
        return result;
    }

    @Override
    protected void merge(Metadata recessive) {
        List<Plugin> recessivePlugins = recessive.getPlugins();
        List<Plugin> plugins = metadata.getPlugins();
        if (!recessivePlugins.isEmpty() || !plugins.isEmpty()) {

    public void mergeDuplicates(Model model, ModelBuildingRequest request, ModelProblemCollector problems) {
        Build build = model.getBuild();
        if (build != null) {
            List<Plugin> plugins = build.getPlugins();
            Map<Object, Plugin> normalized = new LinkedHashMap<>(plugins.size() * 2);

            for (Plugin plugin : plugins) {
                Object key = plugin.getKey();

                PluginContainer target, PluginContainer source, boolean sourceDominant, Map<Object, Object> context) {
            List<Plugin> src = source.getPlugins();
            if (!src.isEmpty()) {
                List<Plugin> tgt = target.getPlugins();

                Map<Object, Plugin> merged = new LinkedHashMap<>((src.size() + tgt.size()) * 2);

                for (Plugin element : tgt) {

        // one by one, and try to find a matching prefix.
        if (result == null && build != null) {
            result = resolveFromProject(request, build.getPlugins());
            if (result == null && management != null) {
                result = resolveFromProject(request, management.getPlugins());
            }
        }

        if (result == null) {
            throw new NoPluginFoundForPrefixException(

                PluginContainer target, PluginContainer source, boolean sourceDominant, Map<Object, Object> context) {
            List<Plugin> src = source.getPlugins();
            if (!src.isEmpty()) {
                List<Plugin> tgt = target.getPlugins();
                Map<Object, Plugin> master = new LinkedHashMap<>(src.size() * 2);

                for (Plugin element : src) {