In Drupal 8, like Drupal 7, you can enable the file description in the file field setting.
But once my file entity is loaded in my preprocess, I don't know how can I get the description value entered for my file. I've tried (without success) :
$myfileentity->toArray(); $myfileentity->get('description'); $myfileentity->get('description_field'); $myfileentity->label();
Any Idea ?