MLSMessageUnpackerImpl
constructor(conversationRepository: ConversationRepository, subconversationRepository: SubconversationRepository, mlsConversationRepository: MLSConversationRepository, pendingProposalScheduler: PendingProposalScheduler, selfUserId: <Error class: unknown class>, protoContentMapper: ProtoContentMapper = MapperProvider.protoContentMapper(selfUserId = selfUserId))