presto-main/src/main/java/io/prestosql/operator/index/StreamingIndexedData.java/StreamingIndexedData/matchesExpectedKey
class StreamingIndexedData:    private boolean matchesExpectedKey(int position, Page page)
    {
        for (int i = 0; i < indexKeyTypes.size(); i++) {
            if (!indexKeyTypes.get(i).equalTo(page.getBlock(i), position, indexKeyTuple.getBlock(i), 0)) {
                return false;
            }
        }
        return true;
    }