public static BlobId of(String bucket, String name) {
    return new BlobId(checkNotNull(bucket), checkNotNull(name), null);
  }
public static BlobId of ( String bucket , String name ) { return new BlobId ( checkNotNull ( bucket ) , checkNotNull ( name ) , null ) ; }
Creates a blob identifier. Generation is set to {@code null}.

@param bucket the name of the bucket that contains the blob
@param name the name of the blob