ArrayList<OverflowOplog> testHookGetAllOverflowOplogs() {
    ArrayList<OverflowOplog> result = new ArrayList<>();
    synchronized (overflowMap) {
      for (OverflowOplog oo : overflowMap.values()) {
        result.add(oo);
      }
    }
    synchronized (compactibleOverflowMap) {
      for (OverflowOplog oo : compactibleOverflowMap.values()) {
        result.add(oo);
      }
    }

    return result;
  }
@param minSize the minimum size this oplog can be
geode-core/src/main/java/org/apache/geode/internal/cache/OverflowOplogSet.java