docs: def save(self):
          """
          Deletes the selected files from storage
          """
          storage = get_media_storage()
          for storage_name in self.cleaned_data['selected_files']:
              full_path = storage.path(storage_name)
              try:
                  storage.delete(storage_name)
                  self.success_files.append(full_path)
              except OSError:
                  self.error_files.append(full_path)