} else if (collection instanceof List) {
        return Collections.unmodifiableList((List<E>) collection);
      } else {
        return Collections.unmodifiableCollection(collection);
      }
    }

    @Override
    Collection<V> wrapCollection(@ParametricNullness K key, Collection<V> collection) {
      if (collection instanceof List) {

      } else if (collection instanceof List) {
        return Collections.unmodifiableList((List<E>) collection);
      } else {
        return Collections.unmodifiableCollection(collection);
      }
    }

    @Override
    Collection<V> wrapCollection(@ParametricNullness K key, Collection<V> collection) {
      if (collection instanceof List) {

  private static class GenericClass<T> {
    private interface Base {}
  }

  private static IterableSubject makeUnmodifiable(Collection<?> actual) {
    return assertThat(Collections.<Object>unmodifiableCollection(actual));
  }

  private static class GenericClass<T> {
    private interface Base {}
  }

  private static IterableSubject makeUnmodifiable(Collection<?> actual) {
    return assertThat(Collections.<Object>unmodifiableCollection(actual));
  }