This is only available in Revit 2020. You can do it like so:
Now, the Resolution and PageNumber inputs are optional with default being 72dpi and page number 1. If you want to process the whole document that has 13 pages you can do what I did above 1..13 which is a syntax for creating a list of numbers from 1-13 ie. [1,2,3,…]
This will result in all pages being imported like so:
You can get the nodes from the following version of the package:
Cheers!
-K