arcgis api for adding slides to sidecar of an existing sidecar

[JonSchull]

I have a manually created storymap with a sidecar in which each slide references a location a shared map. https://storymaps.arcgis.com/stories/a89af6f730ad4ad78bde98912366b9ea

I can't find documentation explaining for the python API explaining how to  delete slides, or create additional slides.  

--finding the sidecar element

--accessing and modifying its slides

A snippet would be much appreciated.

[JonSchull]

Correction.  I have a manually created Guided Tour  (with pins on a map and slides the side, which I now realize is not exactly a sidecar).    

My question should have been "how do I programmatically add items to a tour."

I have also created a sidecar storymap and I still would like to know how to programmatically add slides to a sidecar".