@Override
    public String next() {
      while (lineNumberInBounds()) {
        final VcsRevisionNumber vcsRevisionNumber = myAnnotation.originalRevision(myCurrentLine);
        final String text = myContentsLines[myCurrentLine];
        ++myCurrentLine;

        if (myRevisionNumber.equals(vcsRevisionNumber) && !StringUtil.isEmptyOrSpaces(text)) {
          return text;
        }
      }
      return null;
    }
@Override
    public String next()