docs: public Set<Integer> getFullEndPositionList(int docId, int position)
        throws IOException {
      if (ignoreSpans != null && docId == currentDocId) {
        if (position < minimumPosition) {
          throw new IOException(
              "Unexpected startPosition, should be >= " + minimumPosition + "!");
        } else {
          computeFullEndPositionList(position);
          return fullEndPositionList.get(position);
        }
      } else {
        return null;
      }
    }