public function decodeToken(string $token): JsonToken 	{ 		$parser = new Parser;  		return $parser 			->setKey($this->sharedKey) 			->setAllowedVersions(ProtocolCollection::v4()) 			->setPurpose(Purpose::local()) 			->addRule(new IssuedBy(config('app.url'))) 			->addRule(new ForAudience(config('app.url'))) 			->addRule(new ValidAt) 			->addRule(new NotExpired) 			->parse($token); 	}