WebhookSubscriptionEndpoint union
Endpoint where webhooks will be delivered.
Possible types
[WebhookEventBridgeEndpoint](https://shopify.dev/docs/admin-api/graphql/reference/events/webhookeventbridgeendpoint)
[WebhookHttpEndpoint](https://shopify.dev/docs/admin-api/graphql/reference/events/webhookhttpendpoint)