code of docs about create pptx result without any content
- [ √ ] Question on library usage
https://docs.microsoft.com/en-us/office/open-xml/how-to-create-a-presentation-document-by-providing-a-file-name
sample code same to docs ConsoleApp.zip
result:

link doesn't resolve, but this appears to be the correct link now: https://learn.microsoft.com/en-us/office/open-xml/presentation/how-to-create-a-presentation-document-by-providing-a-file-name?tabs=cs
Closing this, because the issues with this sample have been resolved. The new doc is available here: Create a presentation document by providing a file name and the working sample code is here: https://github.com/OfficeDev/open-xml-docs/blob/live/samples/presentation/create_by_providing_a_file_name/cs/Program.cs