Do all messages share a base class?
I would like to create a map of a topic name to a template function that constructs a message in the context of publishing to a topic. Essentially I would be following the pattern described in this SO post.
However, the caveat is that the objects need to share a parent class. I was looking at the header files and it doesn't seem to be the case, but perhaps there is something that I don't see.
Is there a shared parent class for all messages?
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