Merge QuestPDF with others

[TheoShiako]

Is there a way to merge the pdf I create with other pdf documents I have already?

[ilmalte]

Merging existing PDFs is not currently possible with this library (see #113 in QuestPDF/QuestPDF).

By the way, QuestPDF allows you to generate your document as byte[], given that it's pretty easy to merge it with other PDFs.