When you call Flmngr.pickFiles method you can specify
This is a list if IDs of image formats you pass inside Flmngr config when initialize it.
So when you specify
imageFormats option, Flmngr will return not just an image, but also all image formats (images in another resolutions) you asked for.
In this case inside each returned file (FlmngrFile) you will have
formats field with an array of such images.
Format of the file. Some files can have different formats (please see FlmngrFileWithFormats).
The list of formats of this image if you requested them by using
Full URL of selected file. Uses
urlFileManager as a prefix (you pass it as config when create Flmngr).