function toggleClass($domElement, className, addClass) {
        if (addClass) {
            $domElement.addClass(className);
        } else {
            $domElement.removeClass(className);
        }
    }
Utility function to replace jQuery.toggleClass when used with the second argument, which needs to be a true boolean for jQuery
@param {!jQueryObject} $domElement The jQueryObject to toggle the Class on
@param {!string} className Class name or names (separated by spaces) to toggle
@param {!boolean} addClass A truthy value to add the class and a falsy value to remove the class