Map<Long, Long> reconfigureOnFault(Set<Long> hsIds, FaultMessage fm) {
        return reconfigureOnFault(hsIds, fm, new HashSet<Long>());
    }
Map < Long , Long > reconfigureOnFault ( Set < Long > hsIds , FaultMessage fm ) { return reconfigureOnFault ( hsIds , fm , new HashSet < Long > ( ) ) ; }
Convenience wrapper for tests that don't care about unknown sites