bumpGeneration method
void
bumpGeneration()
Bumps the generation counter. Public so optimized callers can
invalidate downstream caches without going through a member mutation.
Mirrors today's _bumpBulkGen (controller-side caller would also
call coordinator.bumpAnimGen() to bump the broad counter; the
coordinator's bumpBulkGen() does both).
Implementation
void bumpGeneration() {
_generation++;
}