public void setLocatorResponses(long rl) {
    if (_stats == null) {
      responses_from_locator.set(rl);
    } else {
      _stats.setLong(_RESPONSES_FROM_LOCATOR, rl);
    }
  }
Called when the DS comes online so we can hookup the stats
geode-core/src/main/java/org/apache/geode/distributed/internal/LocatorStats.java