public Map<String,Rule> fetchCached(){
  try {
    return cache.get(BUCKET_NAME);
  }
 catch (  ExecutionException e) {
    LOGGER.warn("Unable to fetch rules from cache, returning no rules",e);
    return Collections.emptyMap();
  }
}

public Map < String , Rule > fetchCached ( ) { try { return cache . get ( BUCKET_NAME ) ; } catch ( ExecutionException e ) { LOGGER . warn ( "Unable to fetch rules from cache, returning no rules" , e ) ; return Collections . emptyMap ( ) ; } }
fetch a copy of the rules from the cache .
