code: def refresh_permissions(permissions):
      
      available_permissions = [x.codename for x in
                               Permission.objects.filter(
                                   codename__startswith=ACL_CODE_PREFIX)]
      active_permissions = permissions.keys()
  
      perms_to_add = set(active_permissions) - set(available_permissions)
      perms_to_remove = set(available_permissions) - set(active_permissions)
  
      # Remove deprecated permissions
      for codename in perms_to_remove:
          Permission.objects.filter(codename=codename).delete()
  
      # Add generated permissions
      ct = ContentType.objects.get_for_model(model=auth_models.User)
      for codename in perms_to_add:
          Permission.objects.get_or_create(codename=codename,
                                           name=permissions[codename],
                                           content_type=ct)
docs: Refresh permission:
         Remove deprecated permissions,
         Add generated permissions.