Hey all - i was wondering if any of you knew of a way to tell, when you're
inside of a reference unload callback - ie,
MSceneMessage.addCallback(kAfterUnloadReference) - whether it's done as the
result of an attempt to replace or reload a reference - ie, if you did
cmds.file("newPath.ma", loadReference="refNodeRN").

For instance, inside of a file new callback, you can use
MFileIO.isOpeningFile() to tell whether the new operation is as the result
of a file open - I'd be looking for something similar to tell if a unload
reference is as the result of a load reference.

Anybody ever done anything like this?

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