RAW_LONGS_

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.