code: function (el, selector) {
            el = el[0];
            var matches = Element.matches || Element.prototype.mozMatchesSelector || Element.prototype.msMatchesSelector || Element.prototype.oMatchesSelector || Element.prototype.webkitMatchesSelector;
            while ((el = el.parentElement) && !matches.call(el, selector)) {
            }
            return el ? angular.element(el) : angular.element(document.body);
          }
docs: Helper function to find the first ancestor with a given selector
  @param el - angular element to start looking at
  @param selector - selector to find the parent
  @returns {Object} - Angular element of the ancestor or body if not found
  @private