public ClosableIterator<Long[]> getSubSubIndex(Long first, Long second) {
return new EntryIteratorFixedLengthLongArray(QUIN, btree, first, second);
}
public ClosableIterator<Long[]> getFourthIndex(Long first, Long second, Long third) {
return new EntryIteratorFixedLengthLongArray(QUIN, btree, first, second, third);
}