I have noticed this as well. There are no documentation from what I can see about calling this method on the clients. Looking at the source code it seems to be very server related things that happens. E.g. if the server should advertise through LAN or not, doesn’t sound very client related. However this is for some reason still called on the clients.
It’s a very time consuming process to setup a session if you are supposed to go through all the source code. Some documentation is needed.