TypeToken<?> parameterType = parameters.get(0).getType();
    Type[] typeArgs = ((ParameterizedType) parameterType.getType()).getActualTypeArguments();
    assertThat(typeArgs).hasLength(1);
    TypeVariable<?> captured = (TypeVariable<?>) typeArgs[0];
    assertThat(captured.getBounds()).asList().containsExactly(Object.class);
    assertThat(new TypeToken<List<?>>() {}.isSupertypeOf(parameterType)).isTrue();
  }