is there some library or approach how to do transactions in pharo?

And I don't mean database transactions, but directly in memory on Pharo objects... e.g.

p := Person new.

transaction do: [

�� �� p name: 'Somebody'.

�� �� p age: 1 / 0.

] on: Error do: [

�� �� transaction rollback.

].

self assert: p name equals: 'Nobody'.

self assert: p age equals: 70.

Any pointers appreciated.

Thanks,

Peter