SectionManager::subscribe

public function subscribe(SectionConnection $link): Result
{
	$makeDateTime = static function (string $date)
	{
		$phpDateTime = new \DateTime($date);
		return DateTime::createFromPhp($phpDateTime);
	};

	$result = new Result();
	/**
	 *
	 *
	 */
	/** @var array $data
		"@odata.context": "https://graph.microsoft.com/v1.0/$metadata#subscriptions/$entity",
		"id": "6417dbea-4b53-42f1-9312-859ee5a4f614",
		"resource": "me/events",
		"applicationId": "ee900ae3-2cc9-4615-94b0-683a9bf45dbd",
		"changeType": "created,updated,deleted",
		"clientState": "special",
		"notificationUrl": "https://work24.savecard.ru/bitrix/tools/calendar/push.php",
		"notificationQueryOptions": null,
		"lifecycleNotificationUrl": null,
		"expirationDateTime": "2022-03-16T18:23:45.9356913Z",
		"creatorId": "e65624ee-8b9b-4041-b314-3c1a125b078a",
		"includeResourceData": null,
		"latestSupportedTlsVersion": "v1_2",
		"encryptionCertificate": null,
		"encryptionCertificateId": null,
		"notificationUrlAppId": null
	 */
	$data = $this->context->getVendorSyncService()->subscribeSection($link);

	if ($data)
	{
		$result->setData([
			'CHANNEL_ID' => $data['channelId'],
			'RESOURCE_ID' => $data['id'],
			'EXPIRES' => $makeDateTime($data['expirationDateTime']),
		]);
	}
	else
	{
		$result->addError(new Error('Error of create subscription.'));
	}

	return $result;
}