Predicate and Restrictions related functionality

[eugeniuLivandovschi]

Hi,
I am trying to implement Predicate and Restrictions related functionality in CreatePresentation method from ProofRequestViewModel, but I have some missunderstandings:
First of all, should we select the credential for the predicate same way we select credential for attribute ? If yes, how to get list of predicate credentials, because ListCredentialsForProofRequestAsync method from proofService is returning an empty list (for both cases when the predicate has restrictions and has no restrictions).
In case we should not select the credential for predicate, can someone give a hint on how this should be implemented.
Thanks

[IonTirsina]

pr pr