private static void addLineBreaks(Element element) {
    List<Content> children = element.getContent();

    for (int i = 0; i < children.size() - 2; i++) {
      Content c1 = children.get(i);
      Content c2 = children.get(i + 1);
      Content c3 = children.get(i + 2);

      if (c1 instanceof Element && c2 instanceof Text && c3 instanceof Element
          && (hasLineBreak((Element)c1) || hasLineBreak((Element)c3))
          && isOneEOFText(((Text)c2).getText())) {
        element.setContent(i + 1, new Text(((Text)c2).getText().replace("\n", "\n\n")));
      }
    }
  }
private static void addLineBreaks(Element element)