ConstThe checksum cannot be computed from data which is not decompressed, and every entry stores one except
an AES entry in AE-2 format, so writing the data as-is without declaring it would store a zero which other tools
reject. Copying an entry read with the ZipReaderOptions#passThrough option set to "compressed" from an
AE-2 source into an entry which is not AES-encrypted is therefore refused rather than written: that source
published no checksum to carry over.
Undefined CRC32 error (thrown by ZipWriter#add when the ZipWriterConstructorOptions#passThrough option is set and the ZipWriterAddDataOptions#crc32 option is unset on an entry which stores a checksum)