I wish to indicate to the imported object is existing or not, on the view.
When it is an attached file, you can check what is present in the document by @Attachments or $File field. Therefore, it is possible to display the presence or absence of an attached file on the view.
However, an object loaded using <file><import> does not have @formura or one that determines that the object exists in the rich text field.
Therefore, it can not be displayed on the view. I want a function that can realize this.