IntegerSlots

The low 32 bits are used for the HASH_OR_ZERO, but the upper 32 can be used by other BitFields in subclasses of TupleDescriptor.

The raw 64-bit (longs) that constitute the representation of the string of two-byte characters. Each long contains up to four characters occupying 16 bits each, in little-endian order. Only the last long can be incomplete, and is required to have zeros for the unused elements. The descriptor instances include the field unusedShortsOfLastLong, which indicates how many (0-3) of the 16-bit subfields of the last long are unused.