Lightroom SDK: getRawMetadata( 'previewId' )
Plugins and plugin-sidekick apps can display images, and can, more specifically, display lr-preview images. However, they can not find the preview images that correspond to specified photo(s) without the Id which is presently not exposed. Exposing the preview Id would allow plugins and sidekick apps to be able to display previews. This would facilitate plugin / sidekick apps that can do things like display a preview with focus points, or display thumbnails, and all kinds of other things... Other preview support would be *appreciated*, but preview-id is the only one that is *needed*.