Class rawType = superclass;
    return TypeToken.of(type).getSupertype(rawType).getType();
  }

  private static Type getSubtype(Type type, Class<?> subclass) {
    return TypeToken.of(type).getSubtype(subclass).getType();
  }

        new TypeToken<Iterable<List<String>>>() {}.getSubtype(ListIterable.class));
    assertEquals(
        new TypeToken<ListArrayIterable<String>>() {},
        new TypeToken<Iterable<List<String>[]>>() {}.getSubtype(ListArrayIterable.class));
    assertEquals(
        new TypeToken<ListArrayIterable<String>[]>() {},
        new TypeToken<Iterable<List<String>[]>[]>() {}.getSubtype(ListArrayIterable[].class));
  }

        new TypeToken<Iterable<List<String>>>() {}.getSubtype(ListIterable.class));
    assertEquals(
        new TypeToken<ListArrayIterable<String>>() {},
        new TypeToken<Iterable<List<String>[]>>() {}.getSubtype(ListArrayIterable.class));
    assertEquals(
        new TypeToken<ListArrayIterable<String>[]>() {},
        new TypeToken<Iterable<List<String>[]>[]>() {}.getSubtype(ListArrayIterable[].class));
  }

    TypeToken<List<? extends Number>> numberList = new TypeToken<List<? extends Number>>() {};
    abstract class StringList implements List<String> {}
    assertThrows(IllegalArgumentException.class, () -> numberList.getSubtype(StringList.class));
  }

  private static class OwnerTypeSubtypingTests extends SubtypeTester {
    @TestSubtype
    public Mall<Outdoor>.Shop<Electronics> innerTypeIsSubtype(

                final MediaType mediaTypeFromFilename = mimeTypes.detect(null, metadata);
                return mediaTypeFromFilename.getType() + "/" + mediaTypeFromFilename.getSubtype();
            }
            return mediaType.getType() + "/" + mediaType.getSubtype();
        } catch (final IOException e) {
            throw new MimeTypeException("Could not detect a content type.", e);
        }
    }

    /**

    TypeToken<List<? extends Number>> numberList = new TypeToken<List<? extends Number>>() {};
    abstract class StringList implements List<String> {}
    assertThrows(IllegalArgumentException.class, () -> numberList.getSubtype(StringList.class));
  }

  private static class OwnerTypeSubtypingTests extends SubtypeTester {
    @TestSubtype
    public Mall<Outdoor>.Shop<Electronics> innerTypeIsSubtype(