Disable Auto load of image/headline in campaignItem creation while using backstage api

On taboola UI there is a feature to "Load image and headline from the landing page URL" when you create a campaign Item and enter a url.

In the campaign item creation flow on backstage api there is no such option available and the feature seems to be enabled by default. Furthermore there is no documentation regarding this in the api reference.

https://developers.taboola.com/backstage-api/reference/creating-a-campaign-item
https://developers.taboola.com/backstage-api/reference/create-a-campaign-item

https://developers.taboola.com/backstage-api/reference/updating-campaign-items

Please provide option to enable/disable this feature and update the documentation