How to specify an alternate port for Onvif Connection

[Videstra]

The CreatePTZClientAsync and CreateMediaClientAsync instantiations accept an IP address, Username and Password. My implementation also requires the ability to specify an alternate port (other than 80). How is that done in CreateMediaClientAsync and CreatePTZClientAsync?

[differentrain]

var foo = await OnvifClientFactory.CreateDeviceClientAsync("192.168.1.2:8003", "username", "password");