@Override
    public void deleteAll() {
        val buckets = cloudStorage.list(Storage.BucketListOption.prefix(BUCKET_PREFIX));
        for (val bucket : buckets.iterateAll()) {
            for (val blob : cloudStorage.list(bucket.getName()).iterateAll()) {
                blob.delete();
            }
        }
    }
This is {@link GoogleCloudStorageServiceRegistry}.

@author Misagh Moayyed
@since 7.2.0
support/cas-server-support-gcp-storage-service-registry/src/main/java/org/apereo/cas/services/GoogleCloudStorageServiceRegistry.java