def serializeSenderKeyDistributionMessageToProtobuf(self, groupId, senderKeyDistributionMessage, message = None): m = message or Message() sender_key_distribution_message = ProtoSenderKeyDistributionMessage() sender_key_distribution_message.groupId = groupId sender_key_distribution_message.axolotl_sender_key_distribution_message = senderKeyDistributionMessage.serialize() m.sender_key_distribution_message.MergeFrom(sender_key_distribution_message) # m.conversation = text return m