}

func (c byAccessModes) Len() int {
	return len(c.modes)
}

func claimToClaimKey(claim *v1.PersistentVolumeClaim) string {
	return fmt.Sprintf("%s/%s", claim.Namespace, claim.Name)
}

func claimrefToClaimKey(claimref *v1.ObjectReference) string {
	return fmt.Sprintf("%s/%s", claimref.Namespace, claimref.Name)

					return fmt.Errorf("invalid binding of claim %q to volume %q: volume already claimed by %q", claimToClaimKey(claim), claim.Spec.VolumeName, claimrefToClaimKey(volume.Spec.ClaimRef))
				}
			}
		}
	}
}

// syncBoundClaim is the main controller method to decide what to do with a
// bound claim.

	}
	// sync the claim when its volume is deleted. Explicitly syncing the
	// claim here in response to volume deletion prevents the claim from
	// waiting until the next sync period for its Lost status.
	claimKey := claimrefToClaimKey(volume.Spec.ClaimRef)
	logger.V(5).Info("deleteVolume: scheduling sync of claim", "PVC", klog.KRef(volume.Spec.ClaimRef.Namespace, volume.Spec.ClaimRef.Name), "volumeName", volume.Name)
	ctrl.claimQueue.Add(claimKey)
}