public void unregister(GridCacheTtlManager mgr){
synchronized (mux) {
    mgrs.remove(mgr);
    if (mgrs.isEmpty())     stopCleanupWorker();
  }
}

public void unregister ( GridCacheTtlManager mgr ) { synchronized ( mux ) { mgrs . remove ( mgr ) ; if ( mgrs . isEmpty ( ) ) stopCleanupWorker ( ) ; } }
unregister ttl manager of cache from periodical check on expired entries .
