S12 describes a feature to call sets of methods at the same time:


I would like the spec to clarify what happens to the return values of
all these methods.

I'm fine with a simple answer, such as that they are not available, or
only the first or last set of return values is returned.

As a "use case", we may use of basically this feature in
CGI::Application in Perl5, as part the plugin system. Each plugin
location is like a method name, and as we get to each point in the code,
we look up through the inheritance tree, executing methods at each location.

In this case, I think we ignore the return values.


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