code: def autodiscover_siteprefs(admin_site=None):
      
      if admin_site is None:
          admin_site = admin.site
  
      # Do not discover anything if called from manage.py (e.g. executing commands from cli).
      if 'manage' not in sys.argv[0] or (len(sys.argv) > 1 and sys.argv[1] in MANAGE_SAFE_COMMANDS):
          import_prefs()
          Preference.read_prefs(get_prefs())
          register_admin_models(admin_site)
docs: Automatically discovers and registers all preferences available in all apps.
  
      :param admin.AdminSite admin_site: Custom AdminSite object.