java.util.UUID#timestamp() only works for version 1 UUIDs. It would be nice to have similar functionality for version 6 UUIDs. E.g. a static method in TimeBasedReorderedGenerator, something along the lines of ``` public static long timestamp(UUID uuid) { assert(uuid.version()==6); return ((uuid.getMostSignificantBits()>>>4) & ~0xFFF) | (uuid.getMostSignificantBits()&0xFFF); } ``` Better yet, a static method in UUIDUtil that returns the number of millis since unix epoch for versions 1, 6 and 7 UUIDs. thank you very much Gabriel