We have custom game server hosting via PlayFab working and also players finding the server via Client/Matchmake and joining it. So far so good. Now we want to authenticate the joining player server-side using Server/RedeemMatchmakerTicket which requires the player's Ticket (received from the client) and the game server's LobbyID. How does the game server instance know its ID? Is it the <game_id> command line argument that starts the server?