20. The computer-implemented method of claim 19 , wherein executing the executable code further comprises: allocating storage for a state associated with the one or more instances of the one or more handle subclasses.
21. The computer-implemented method of claim 20 , wherein the executing the executable code further comprises: refraining from copying the state associated with the one or more instances of the one or more handle subclasses in response to a command to copy the one or more instances.