}
                extensionPlugins.add(plugin);
            }

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

        if (extensionPlugins.isEmpty()) {
            if (logger.isDebugEnabled()) {

            // 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());

                    if (projectsMap.containsKey(pluginKey)) {

            throws PluginResolutionException, PluginContainerException {
        Plugin plugin = pluginDescriptor.getPlugin();
        MavenProject project = session.getCurrentProject();

        if (plugin.isExtensions()) {
            ExtensionRealmCache.CacheRecord extensionRecord;
            try {
                RepositorySystemSession repositorySession = session.getRepositorySession();