}

        for (MavenProject project : projects) {
            // MNG-1911 / MNG-5572: Building plugins with extensions cannot be part of reactor
            for (Plugin plugin : project.getBuildPlugins()) {
                if (plugin.isExtensions()) {
                    String pluginKey =
                            ArtifactUtils.key(plugin.getGroupId(), plugin.getArtifactId(), plugin.getVersion());

            project.getDependencies().add(d);

            return this;
        }

        // Plugins
        //
        public ProjectBuilder addPlugin(Plugin plugin) {
            project.getBuildPlugins().add(plugin);
            return this;
        }

        public MavenProject get() {
            return project;
        }
    }