Microsoft.Extensions.AI: How can PDF files be processed?

[skurth]

As demonstrated in https://youtu.be/qcp6ufe_XYo?si=7JeVbDOj6e8LF1jl&t=1852, Microsoft.Extensions.AI can extract informations from an image and return a response as a custom class.

What is the best approach to achieving the same with a PDF file?

For example, if my PDFs represent different invoices and I want to extract the title and invoice number, will there be a PdfContent type in the future? Alternatively, can I supply the PDF in another way, or is the only option to extract the text (and images) from the PDF myself before providing it to the AI?

(I know there are services like https://azure.microsoft.com/en-us/products/ai-services/ai-document-intelligence)