for i, entry := range m.o[:idx] {
			metaDataPoolPut(entry.metadata)
			m.o[i].metadata = nil
		}
	}

	m.o = m.o[idx:]
}

// forwardPast will truncate m so only entries that are after s is in the list.
func (m *metaCacheEntriesSorted) forwardPast(s string) {
	if s == "" {
		return
	}
	idx := sort.Search(len(m.o), func(i int) bool {
		return m.o[i].name > s
	})
	if m.reuse {

    }
  }

  private static class ReverseList<T extends @Nullable Object> extends AbstractList<T> {
    private final List<T> forwardList;

    ReverseList(List<T> forwardList) {
      this.forwardList = checkNotNull(forwardList);
    }

    List<T> getForwardList() {
      return forwardList;
    }

    private int reverseIndex(int index) {
      int size = size();
      checkElementIndex(index, size);

    }

    @Override
    public ImmutableList<E> reverse() {
      return forwardList;
    }

    @Override
    public boolean contains(@CheckForNull Object object) {
      return forwardList.contains(object);
    }

    @Override
    public int indexOf(@CheckForNull Object object) {
      int index = forwardList.lastIndexOf(object);
      return (index >= 0) ? reverseIndex(index) : -1;
    }

    }

    @Override
    public ImmutableList<E> reverse() {
      return forwardList;
    }

    @Override
    public boolean contains(@CheckForNull Object object) {
      return forwardList.contains(object);
    }

    @Override
    public int indexOf(@CheckForNull Object object) {
      int index = forwardList.lastIndexOf(object);
      return (index >= 0) ? reverseIndex(index) : -1;
    }