public static void AddChangeHandler <T>(this T element, Expression <Func <object> > expression, PropertyChangedHandler <T> handler)
where T : FrameworkElement
{
string propertyPath;
var propertyInfo = expression.GetPropertyInfo();
var dependencyProperty = DependencyPropertyHelper.GetDependencyPropertyByPropertyName(element, propertyInfo.Name, out propertyPath);
AddChangeHandler(element, dependencyProperty, handler);
}