public function deleting(User $user): void 	{ 		$user->activities->each(function (UserActivity $item): void { 			$item->delete(); 		});  		$user->sessions->each(function (Session $item): void { 			$item->delete(); 		});  		$user->emailActivities->each(function (EmailActivity $item): void { 			$item->delete(); 		}); 	}