[TYPO3-mvc] Best way to convert "tx_ext_domain_model_foo:1" into object?

[Tim Schoch | GSTALTIG]

Bastian, do you see this as a good to go way or more a dirty route?
I can't think of a drawback besides having to mock the object manager in unit tests.
(I've got another "how do the core devs see that" question, but i'll open a new thread for that one)
Gruess Tim

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