This method is in Alpha and may change in the future.
Updates a product group.
Each time the product group is updated, revision increments by 1.
The current revision must be passed when updating the product group.
This ensures you're working with the latest product group and prevents unintended overwrites.
You can only call this method when authenticated as a Wix app or Wix user identity.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.