[Zope] transaction.begin() ??

[robert rottermann]

in a unittest I use transaction.begin() as follows:

import transaction
transaction.get().begin()

I then get the following error:
AttributeError: 'Transaction' object has no attribute 'begin'

when I look at the code I am unsure whether transaction should have a 
begin method.

If it does not exist anymore, by what is the method replaced?

thanks
robert

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