@Override
    protected boolean betterPostponeFlushNow() {
      //RC: Basically, we're trying to flush 'if idle': i.e. we don't want to issue a flush if
      //    somebody actively writes to VFS because flush will slow them down, if not stall
      //    them -- and (regular) flush is less important than e.g. a current UI task. So we
      //    attempt to flush only if there were _no updates_ in VFS since the last invocation
      //    of this method:
      int currentModCount = connection.records.getGlobalModCount();
      if (lastModCount != currentModCount) {
        lastModCount = currentModCount;
        return true;
      }
      return false;
    }
@Override
    protected boolean betterPostponeFlushNow()