Hi, is anyone familiar as to why there's no single method for converting from an occupied entry to a vacant one during the removal operation? Would it be by any chance unsound to perform occupied.remove_and_vacate() which would return the original value along with the VacantEntry?

My question arose while I was trying "update or insert" using the entry api.
Note, I don't do this for performance reasons. Its the no-error-path behaviour that matters for me.

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