virtual bool RequestReservation ( const [FOnlineSessionSearchResult](API\Plugins\OnlineSubsystem\FOnlineSessionSearchResult) & DesiredHost, const [FUniqueNetIdRepl](API\Runtime\Engine\GameFramework\FUniqueNetIdRepl) & RequestingSpectator, const [FPlayerReservation](API\Plugins\OnlineSubsystemUtils\FPlayerReservation) & Reservation )