code: function getElement(el) {
    var queryResult = angular.isString(el) ?
        document.querySelector(el) : el;
    return angular.element(queryResult);
  }
docs: ***************************************************************************
  Util Methods                               *
  *************************************************************************** 
  Returns the angular element associated with a css selector or element.
  @param el {string|!angular.JQLite|!Element}
  @returns {!angular.JQLite}