Hey folks, some of our internal grpc services communicate failure by setting

error

field on the proto (but not returning an error code, so the grpc return code is OK). From what I understand there's no way to specify this in pact? https://docs.pact.io/getting_started/matching/gotchas#you-cannot-expect-a-field-to-not-be-present-in-a-response

This is hard to define in a contract test. There is currently no way to say a value should not be there.