private void addIntervalPostingList(long featureHash, long subqueryBitMap, List<PostingList> postingLists) {
            SimpleIndex.Entry e = intervalIndex.getPostingList(featureHash);
            if (e != null) {
                postingLists.add(new IntervalPostingList(intervalStore, e.docIds, e.dataRefs, subqueryBitMap));
            }
        }
Retrieves a stream of hits for the given query.

@param query Specifies the boolean variables that are true.
@return A stream of hits.
predicate-search/src/main/java/com/yahoo/search/predicate/PredicateIndex.java