@Override
    void dump(PrintWriter stream) {
      stream.print(getBits());
      if (count > 1) {
        long interval = getInterval();
        if (interval != 0) {
          stream.print("+=" + interval);
        }
        stream.print("r" + count);
      }
    }
Returns number of items added to values
geode-core/src/main/java/org/apache/geode/internal/statistics/StatArchiveReader.java