How to add slide like Python pptx with default slideout?

Question

I am building my own ppt C# library, I found that python pptx new slide only needs to pass in the slideout parameter, how can I write my code like this？

python code as this:

prs = Presentation()
slide_layout = prs.slide_layouts[6]
slide = prs.slides.add_slide(slide_layout)