Akka.Remote.Transport.AkkaPduProtobuffCodec.ConstructMessage C# (CSharp) Method

        public override ByteString ConstructMessage(Address localAddress, IActorRef recipient, SerializedMessage serializedMessage,
            IActorRef senderOption = null, SeqNo seqOption = null, Ack ackOption = null)
        {
            var ackAndEnvelopeBuilder = AckAndEnvelopeContainer.CreateBuilder();
            var envelopeBuilder = RemoteEnvelope.CreateBuilder().SetRecipient(SerializeActorRef(recipient.Path.Address, recipient));
            if (senderOption != null && senderOption.Path != null) { envelopeBuilder = envelopeBuilder.SetSender(SerializeActorRef(localAddress, senderOption)); }
            if (seqOption != null) { envelopeBuilder = envelopeBuilder.SetSeq((ulong)seqOption.RawValue); }
            if (ackOption != null) { ackAndEnvelopeBuilder = ackAndEnvelopeBuilder.SetAck(AckBuilder(ackOption)); }
            envelopeBuilder = envelopeBuilder.SetMessage(serializedMessage);
            ackAndEnvelopeBuilder = ackAndEnvelopeBuilder.SetEnvelope(envelopeBuilder);

            return ackAndEnvelopeBuilder.Build().ToByteString();
        }