Refreshes metadata for a lobby you're not necessarily in right now you never do this for lobbies you're a member of, only if your this will send down all the metadata associated with a lobby this is an asynchronous call returns false if the local user is not connected to the Steam servers results will be returned by a LobbyDataUpdate_t callback if the specified lobby doesn't exist, LobbyDataUpdate_t::m_bSuccess will be set to false