code: function (node) {
          return Tools.toArray((node.nodeName === "iframe" ? node.contentDocument || node.contentWindow.document : node).childNodes);
        }
docs: Returns all child nodes matching the optional selector.
  
  @method contents
  @param {Element/tinymce.dom.DomQuery} node Node to get the contents of.
  @return {tinymce.dom.DomQuery} New DomQuery instance with all matching elements.