//
  // In order to create or update a ClusterTrustBundle that sets signerName,
  // you must have the following cluster-scoped permission:
  // group=certificates.k8s.io resource=signers resourceName=<the signer name>
  // verb=attest.
  //
  // If signerName is not empty, then the ClusterTrustBundle object must be
  // named with the signer name as a prefix (translating slashes to colons).
  // For example, for the signer name `example.com/foo`, valid