docs: private boolean willObjectBeDeletedLocked(String id) {
      if (!this.items.containsKey(id)) {
        return false;
      }
      Deque<MutablePair<DeltaType, Object>> deltas = this.items.get(id);
      return !(Collections.isEmptyCollection(deltas))
          && deltas.peekLast().getLeft().equals(DeltaType.Deleted);
    }