I'm trying to set a default image to be a) displayed when the remote image is being fetched for a poster in a RowList, and b) displayed as a fallback if the remote image is not present/not valid. I've got a blank tile image that I ship with my channel that I can reference via pkg:/... I just need a way to be able to set it as the default, and then provide a remote URL via hdPosterUrl.
It looks like SetLoadingPoster() is the sort of function I'm looking for, however the docs say it is deprecated but don't suggest an alternative.
Any suggestions could be much appreciated.