code: public Element prepend(String html) {
          Validate.notNull(html);
          List<Node> nodes = NodeUtils.parser(this).parseFragmentInput(html, this, baseUri());
          addChildren(0, nodes.toArray(new Node[0]));
          return this;
      }
docs: Add inner HTML into this element. The supplied HTML will be parsed, and each node prepended to the start of the element's children.
  @param html HTML to add inside this element, before the existing HTML
  @return this element
  @see #html(String)