code: public Acl updateBucketAcl(String bucketName) {
      // [START updateBucketAcl]
      Acl acl = storage.updateAcl(bucketName, Acl.of(User.ofAllAuthenticatedUsers(), Role.OWNER));
      // [END updateBucketAcl]
      return acl;
    }
docs: [VARIABLE "my_unique_bucket"]