code: def list_kubernetes_roles(self, mount_point='kubernetes'):
          
  
          url = 'v1/auth/{0}/role?list=true'.format(mount_point)
          return self._adapter.get(url).json()
docs: GET /auth/<mount_point>/role?list=true
  
          :param mount_point: The "path" the k8s auth backend was mounted on. Vault currently defaults to "kubernetes".
          :type mount_point: str.
          :return: Parsed JSON response from the list roles GET request.
          :rtype: dict.