Implements a writeable vector clock interface. Callers must explicitly use the IWriteableVClock interface to set the vector clock value. This is by design and is implemented in an attempt to prevent developers new to Riak from causing themselves more pain. This trade off should present developers with a reliable way to explicitly drop down to mucking about with vector clocks - it becomes apparent to a casual observer that something out of the ordinary is happening.

A better understanding of the usefulness of vector clocks can be found in John Daily's Understanding Riak’s Configurable Behaviors: Part 2 (http://basho.com/riaks-config-behaviors-part-2/).