Description:
------------
Add support for decorators that can be used to decorate methods and classes.
The decorator pattern - https://en.wikipedia.org/wiki/Decorator_pattern

C# have support for decorators, and in ASP.NET MVC you can use decorators such as [Authorize] and [HttpPost].

[Authorize]
public ActionResult Foo() {
    // Code here
}

Only authorized users can reach Foo, other users will be redirected to the login page.