I have a couple of layers from our portal that populate a ListBox in my AddIn.
Data in our portal are available as Map Image Layer and as Feature Layer, and to give the user an easy way to distinguish one from the other I would like to add the appropriate icon to each ListBoxItem.
However, I cannot find the icons listed at https://github.com/Esri/arcgis-pro-sdk/wiki/DAML-ID-Reference-Icons. The icons in question are these:

Can somebody tell me there reference names?