I have a couple of OO questions:

If I have defined some classes +A, +B and +C, and made an object X by doing ...

   (setq X (new '(+A +B)))

.. is it possible later to include the class +C among the classes +A and +B for this object X? If yes, how?

And if I wanted this object X to have a new unique method m>, how could that be arranged?


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