inbound.go
func (response *InboundCallResponse) Arg2Writer() (ArgWriter, error) {
	if err := NewArgWriter(response.arg1Writer()).Write(nil); err != nil {
		return nil, err
	}
	return response.arg2Writer()
}
func (response *InboundCallResponse) Arg2Writer() (ArgWriter, error) {
	if err := NewArgWriter(response.arg1Writer()).Write(nil); err != nil {
		return nil, err
	}
	return response.arg2Writer()
}
// Arg2Writer returns a WriteCloser that can be used to write the second argument.
// The returned writer must be closed once the write is complete.