@Override
  public OverflowOplog getChild(long oplogId) {
    // the oplog id is cast to an integer because the overflow
    // map uses integer oplog ids.
    return getChild((int) oplogId);
  }
@param minSize the minimum size this oplog can be
geode-core/src/main/java/org/apache/geode/internal/cache/OverflowOplogSet.java