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();
  }

    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));
  }

   * {@code Iterable<String>} and {@code subclass} is {@code List}, {@code List<String>} is
   * returned.
   */
  public final TypeToken<? extends T> getSubtype(Class<?> subclass) {
    checkArgument(
        !(runtimeType instanceof TypeVariable), "Cannot get subtype of type variable <%s>", this);
    if (runtimeType instanceof WildcardType) {

        @Override
        public OptionalThing<String> getCronExp() {
            return OptionalThing.empty();
        }

        @Override
        public Class<? extends org.lastaflute.job.LaJob> getJobType() {
            return null;
        }

        @Override
        public OptionalThing<org.lastaflute.job.subsidiary.CronParamsSupplier> getParamsSupplier() {
            return OptionalThing.empty();

        @Override
        public OptionalThing<String> getCronExp() {
            return OptionalThing.empty();
        }

        @Override
        public Class<? extends org.lastaflute.job.LaJob> getJobType() {
            return null;
        }

        @Override
        public OptionalThing<org.lastaflute.job.subsidiary.CronParamsSupplier> getParamsSupplier() {
            return OptionalThing.empty();