private int findFirstNonEmptyShredIndex() {
      for (int shredIndex = myShredIndex; shredIndex < myShreds.size(); shredIndex++) {
        String shredText = extractShredText(myShreds.get(shredIndex));
        if (!StringUtil.isEmpty(shredText)) return shredIndex;
      }
      return -1;
    }
private int findFirstNonEmptyShredIndex()