[Pharo-project] Cmd + D

Hi, It happened many times to me that I press CMD + D on a class in the System browser (i.e., my aim is to duplicate a class, as in many other apps CMD + D would do) but in Pharo that shortcut deletes the class without asking for confirmation. What's your take? Is that a shortcut that has been forgotten or is like that on purpose? Thanks. Cheers, Roby