docs: def get_inline_views_from_fieldsets(fieldsets):
      """Returns a list of field names from an admin fieldsets structure."""
      inline_views = []
      for _, opts in fieldsets or ():
          if 'fieldsets' in opts:
              inline_views += get_inline_views_from_fieldsets(opts.get('fieldsets'))
          elif 'inline_view' in opts:
              inline_views.append(opts.get('inline_view'))
      return inline_views