final List<Artifact> pluginArtifacts;

        RepositorySystemSession repositorySession = session.getRepositorySession();
        DependencyFilter dependencyFilter = project.getExtensionDependencyFilter();
        dependencyFilter = AndDependencyFilter.newInstance(dependencyFilter, filter);

        DependencyResult result = pluginDependenciesResolver.resolvePlugin(
                plugin,

     * used by plugins.
     *
     * @return The dependency filter or {@code null}.
     */
    public DependencyFilter getExtensionDependencyFilter() {
        return extensionDependencyFilter;
    }

    /**
     * Sets the transitive dependency artifacts that have been resolved/collected for this project.