}

    private List<Artifact> resolveExtensionArtifacts(
            Plugin extensionPlugin, List<RemoteRepository> repositories, RepositorySystemSession session)
            throws PluginResolutionException {
        DependencyResult root =
                pluginDependenciesResolver.resolvePlugin(extensionPlugin, null, null, repositories, session);
        return toMavenArtifacts(root);
    }