Adding/Removing a page to/from a PdfDocument

[realskudd]

I'm working on building some software to manage PDF documents, in which I'd like to be able to remove or add pages depending on the action of the user.

As best as I can tell, the only documented way is to go through the longhand version of building a new PDF with the PdfBuilder, but that also requires knowing about the content of the original PDF document, which might be different from document to document.

Is there an easy way to accomplish the adding or removing of pages?