Bio-Formats is a Java library for reading and writing data in life sciences image file formats. It is developed by the Open Microscopy Environment. Bio-Formats is released under the GNU General Public License (GPL); commercial licenses are available from Glencoe Software.
Regarding:
https://github.com/scifio/bioformats/blob/6bcf6b9d284686416f3458c8893fbcf4ebcdecfd/components/forks/poi/src/loci/poi/hssf/record/SSTRecord.java#L455
Should it be:
if (bucketAbsoluteOffsets == null || bucketRelativeOffsets == null)