Change message "This file is auto-generated by Vaadin"

Is it possible to add / modify the message “This file is auto-generated by Vaadin” when looking at the source?

I am working on the implementation of an API but when someone makes a mistake it gets a Vaadin javascript dump with that message on top.

I think you just need to provide a custom index.html without that comment: https://vaadin.com/docs/latest/flow/advanced/modifying-the-bootstrap-page