BOR Types and ABAP Classes

[Bibby, David]

Hello All,
I've never used workflows with ABAP classes before but I am currently implementing a SAP standard workflow that uses just such a thing.

However I need to make changes to this class.
I have created a subclass and defined it's superclass as the one the workflow uses.
However, as the attributes of the superclass are Private they seem to be unavailable to my subclass.

Also when I try to activate my subclass I get the error
"The superclass has the property 'CREATE PRIVATE'. You cannot create an	
instance of the subclass. This can only be changed if the subclass is a		
friend of the superclass.	"	

Making the subclass a friend of the superclass would be making a SAP modification.

As there appears to be no delegation like there are with BOR Types, how are we supposed to use/extend standard SAP ABAP Classes ?

Many Thanks
David

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