// +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;

  // spec defines the desired characteristics of a volume requested by a pod author.
  // More info: https://kubernetes.io/docs/concepts/storage/persistent-volumes#persistentvolumeclaims
  // +optional
  optional PersistentVolumeClaimSpec spec = 2;

* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

* Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

  // +optional
  repeated string requiredDropCapabilities = 3;

  // allowedCapabilities is a list of capabilities that can be requested to add to the container.
  // Capabilities in this field may be added at the pod author's discretion.
  // You must not list a capability in both allowedCapabilities and requiredDropCapabilities.
  // +optional
  repeated string allowedCapabilities = 4;