Call has no InputArguments

[jwzl]

hello,
I want to call Call() without args, but it always failed,
The client did not specify all of the input arguments for the method. StatusBadArgumentsMissing
req := &ua.CallMethodRequest{ ObjectID: id, MethodID: mid, InputArguments: inputArgs, } resp, err := c.Client.Call(c.Ctx, req)
how can I set the InputArguments when it without args? thanks!

Best Regards
Qing