`list_media_items_by_path` fails for incremental transform preview

" A PreviewIncrementalTransformInput object does not have an attribute list_media_items_by_path. Please check the spelling and/or the datatype of the object."

Error while attempting to preview a transformation of a media set. The line of code that’s failing looks like

df = media_set_input.list_media_items_by_path(ctx)

My code is just like the media sets examples except it’s an incremental transform.

Does previewing incremental transforms on media sets just not work?

Currently previewing incremental transforms on media sets is not supported