can I use smth like

fromProviderState

matcher in protobuf plugin? the doc here doesn't mention it: https://github.com/pact-foundation/pact-plugins/blob/main/docs/matching-rule-definition-expressions.md

Yes, see https://github.com/pactflow/pact-protobuf-plugin?tab=readme-ov-file#provider-state-injected-values

Good timing Ron 😛