[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FChatRoomMember](API\Plugins\OnlineSubsystem\Interfaces\FChatRoomMember) > GetMember ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & UserId, const [FChatRoomId](API\Plugins\OnlineSubsystem\Interfaces\FChatRoomId) & RoomId, const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & MemberId )