docs: private void normaliseTextNodes(Element element) {
          List<Node> toMove = new ArrayList<>();
          for (Node node: element.childNodes) {
              if (node instanceof TextNode) {
                  TextNode tn = (TextNode) node;
                  if (!tn.isBlank())
                      toMove.add(tn);
              }
          }
  
          for (int i = toMove.size()-1; i >= 0; i--) {
              Node node = toMove.get(i);
              element.removeChild(node);
              body().prependChild(new TextNode(" "));
              body().prependChild(node);
          }
      }