public static Short[] getAllValidVersions() {
    return new Short[]{BLOB_ID_V1, BLOB_ID_V2, BLOB_ID_V3, BLOB_ID_V4, BLOB_ID_V5, BLOB_ID_V6};
  }
@return all valid versions of BlobId.
ambry-commons/src/main/java/com/github/ambry/commons/BlobId.java