private static boolean isBag(SelectResults coln) {
    return coln.getCollectionType().allowsDuplicates();
  }
Returns an appropriate, empty {@code SelectResults}

TODO: statsOrNull is always null

@param collectionType The {@code CollectionType} of the query results
@return an appropriate, empty {@code SelectResults}
geode-core/src/main/java/org/apache/geode/cache/query/internal/QueryUtils.java