public void addUUID(Chunk c, long row) {
if (c.isNA_abs(row)) addUUID(C16Chunk._LO_NA, C16Chunk._HI_NA);
else addUUID(c.at16l_abs(row), c.at16h_abs(row));
}
public void addStr(Chunk c, long row) {
if (c.isNA_abs(row)) addNA();
else addStr(c.atStr_abs(new ValueString(), row));
}