GccCredential credential = (GccCredential) stack.getCredential();
ImageList list = compute.images().list(credential.getProjectId()).execute();
Long time = new Date().getTime();
if (!containsSpecificImage(list)) {
try {
Bucket bucket = new Bucket();
bucket.setName(credential.getProjectId() + time);
bucket.setStorageClass("STANDARD");
Storage.Buckets.Insert ins = storage.buckets().insert(credential.getProjectId(), bucket);
ins.execute();
} catch (GoogleJsonResponseException ex) {
if (ex.getStatusCode() != CONFLICT) {
throw ex;