[TOnlineAsyncOpHandle](API\Plugins\OnlineServicesInterface\Online\TOnlineAsyncOpHandle)< [FAcceptFriendInvite](API\Plugins\OnlineServicesInterface\Online\FAcceptFriendInvite) > AcceptFriendInvite ( [FAcceptFriendInvite::Params](API\Plugins\OnlineServicesInterface\Online\FAcceptFriendInvite\Params) && Params )