This is a handler for sending and receiving Rich Presence messages. Initialize it by passing a SteamClient instance and an AppID to the constructor.
var steamRichPresence = new Steam.SteamRichPresence(steamClient, 570);Uploads rich presence for the AppID this SteamRichPresence instance was initialized with. body is a CMsgClientRichPresenceUpload object.
Requests rich presence for the AppID this SteamRichPresence instance was initialized with. body is a CMsgClientRichPresenceRequest object.
Rich presence info was received for the AppID this SteamRichPresence instance was initialized with.