[TOnlineAsyncOpHandle](API\Plugins\OnlineServicesInterface\Online\TOnlineAsyncOpHandle)< [FRejectFriendInvite](API\Plugins\OnlineServicesInterface\Online\FRejectFriendInvite) > RejectFriendInvite ( [FRejectFriendInvite::Params](API\Plugins\OnlineServicesInterface\Online\FRejectFriendInvite\Params) && Params )