I would not use inheritance but maybe aggregation in your case.

If aggregation does not fit the problem pattern, maybe "roles" or simply manually importing the parametrized methods from CP and SW into the main class is what you want.

Without seeing a minimal, self-contained example that also explains what the intended result is, I can only give vague hints.

In reply to Re: mro's which to use for flexibility? by Corion
in thread mro's which to use for flexibility? by perl-diddler

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