docs: def create_cvmfs_persistent_volume_claim(cvmfs_volume):
      """Create CVMFS persistent volume claim."""
      from kubernetes.client.rest import ApiException
      from reana_commons.k8s.api_client import current_k8s_corev1_api_client
  
      try:
          current_k8s_corev1_api_client.\
              create_namespaced_persistent_volume_claim(
                  "default",
                  render_cvmfs_pvc(cvmfs_volume)
              )
      except ApiException as e:
          if e.status != 409:
              raise e