The PureMVC Framework Code at the Speed of Thought

Hi, i just like to ask you how to use the macro command in as2..
i have problems in overriding:
   protected function initializeMacroCommand():void
   {
   }
i dont know how to override this function in as2.
if use override a syntax error shows up..
please need help..
maybe a sample code of macro command will do thanks..