@Inject
    PlexusContainer container;

    private Path rootDirectory;

    @Test
    public void testPluginDescriptorExpressionReference() throws Exception {
        Session session = newSession();
        MojoExecution exec = newMojoExecution(session);

        Object result =
                new PluginParameterExpressionEvaluatorV4(session, null, exec).evaluate("${mojo.plugin.descriptor}");