protected void pickupBaggage(RpcInternalContext context, SofaResponse response) {
        if (RpcInvokeContext.isBaggageEnable()) {
            RpcInvokeContext old = null;
            RpcInvokeContext newContext = null;
            if (context != null) {
                old = (RpcInvokeContext) context.getAttachment(RpcConstants.HIDDEN_KEY_INVOKE_CONTEXT);
            }
            if (old != null) {
                RpcInvokeContext.setContext(old);
            }
            newContext = RpcInvokeContext.getContext();
            BaggageResolver.pickupFromResponse(newContext, response);

            if (old != null) {
                old.getAllResponseBaggage().putAll(newContext.getAllResponseBaggage());
                old.getAllRequestBaggage().putAll(newContext.getAllRequestBaggage());
            }

        }
    }
Build arg sigs for stream calls.

@param requestArgs request args
@return arg sigs, arg.getClass().getName().
remoting/remoting-triple/src/main/java/com/alipay/sofa/rpc/transport/triple/TripleClientInvoker.java