question: public int register ( Advice advice ) { int adviceId = adviceIdSeed . getAndIncrement ( ) ; ActiveInstances current , next ; do { current = active . get ( ) ; next = current . add ( advice , adviceId ) ; } while ( ! active . compareAndSet ( current , next ) ) ; return adviceId ; }
target:  Registers an advice instance, returning the unique lookup id for the advice 