@Test
public void serializeOneAnnotated() throws Exception {

    Gson gson = new Gson();
    JsonSerializer serializer = new JsonSerializer(gson);

    Invokable<?, Object> method = Invokable.from(Methods.class.getMethod("oneAnnotated", Pojo.class));
    Parameter[] parameters = Iterables.toArray(method.getParameters(), Parameter.class);

    Pojo pojo = new Pojo("Hello world!", 42);
    byte[] bytes = serializer.serialize(parameters, new Object[] { pojo });

    String expected = gson.toJson(Collections.singletonMap("value", pojo));
    JSONAssert.assertEquals(expected, new String(bytes, Charsets.UTF_8), true);
}