code: def get_role_model():
      
      app_model = getattr(settings, "ARCTIC_ROLE_MODEL", "arctic.Role")
  
      try:
          return django_apps.get_model(app_model)
      except ValueError:
          raise ImproperlyConfigured(
              "ARCTIC_ROLE_MODEL must be of the " "form 'app_label.model_name'"
          )
      except LookupError:
          raise ImproperlyConfigured(
              "ARCTIC_ROLE_MODEL refers to model '%s' that has not been "
              "installed" % settings.ARCTIC_ROLE_MODEL
          )
docs: Returns the Role model that is active in this project.