The clock sequence value associated with this UUID.
The 14 bit clock sequence value is constructed from the clock sequence field of this UUID. The clock sequence field is used to guarantee temporal uniqueness in a time-based UUID.
clockSequence value is only meaningful in a time-based
UUID, which has version type 1. If this UUID is not a time-based UUID
then this method throws UnsupportedOperationException.
|If this UUID is not a version 1 UUID|