// The singular form of a resource should always be an optional element - when in doubt use the canonical resource name.
  optional string singularResource = 4;

  // verbs is a list of supported API operation types (this includes
  // but is not limited to get, list, watch, create, update, patch,
  // delete, deletecollection, and proxy).
  // +listType=set
  repeated string verbs = 5;

  // endpoint. These key/value pairs must conform with the label format.
  // https://kubernetes.io/docs/concepts/overview/working-with-objects/labels
  // Topology may include a maximum of 16 key/value pairs. This includes, but
  // is not limited to the following well known keys:
  // * kubernetes.io/hostname: the value indicates the hostname of the node
  //   where the endpoint is located. This should match the corresponding
  //   node label.

  // +optional
  repeated ImageReviewContainerSpec containers = 1;

  // Annotations is a list of key-value pairs extracted from the Pod's annotations.
  // It only includes keys which match the pattern `*.image-policy.k8s.io/*`.
  // It is up to each webhook backend to determine how to interpret these annotations, if at all.
  // +optional
  map<string, string> annotations = 2;