meaning of field 'goaway'?

Hi,

I am wondering about the meaning of the field
'goaway' of structure 'class' defined in include/header.h.
Does it affect if or how instances of a class are deleted
(as seems to be the case with field 'dontdelete') or does
it affect how the class itself is deleted? Reading the code
in module.c (cleanup_module) I couldn't figure it out.

Thanks,
Ralf

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