public void testGetSupertype_withTypeVariable() {
    ParameterizedType expectedType =
        Types.newParameterizedType(
            Iterable.class,
            Types.newParameterizedType(List.class, ListIterable.class.getTypeParameters()[0]));
    assertEquals(
        expectedType, TypeToken.of(ListIterable.class).getSupertype(Iterable.class).getType());
  }

   * {@code ownerType}.
   */
  static ParameterizedType newParameterizedTypeWithOwner(
      @Nullable Type ownerType, Class<?> rawType, Type... arguments) {
    if (ownerType == null) {
      return newParameterizedType(rawType, arguments);
    }
    // ParameterizedTypeImpl constructor already checks, but we want to throw NPE before IAE
    checkNotNull(arguments);

   * {@code ownerType}.
   */
  static ParameterizedType newParameterizedTypeWithOwner(
      @Nullable Type ownerType, Class<?> rawType, Type... arguments) {
    if (ownerType == null) {
      return newParameterizedType(rawType, arguments);
    }
    // ParameterizedTypeImpl constructor already checks, but we want to throw NPE before IAE
    checkNotNull(arguments);