How to get the name of a class of a method as NSString?

I need the name of the class that owns a method, as NSString. Example: There's a -fooBar method inside a SomeClass, and that -fooBar method runs some code. This code must print out what class "owns" it, I mean: What class that method belongs to. So I can't hard-type the class name in a NSString because I need that for debugging purposes, determining dynamically the name of the class. Hard to explain. Any idea?