> + Queue<HashCode> q = Lists.newLinkedList();
> +
> + //Divide the payload in chunks and queue them.
> + byte[] buffer = new byte[CHUNK_SIZE];
> + int bytesRead;
> + while ((bytesRead = is.read(buffer)) >= 0) {
> + q.offer(Hashing.sha256().hashBytes(buffer, 0, bytesRead));
> + hasher.putBytes(buffer, 0, bytesRead);
> + }
> +
> + //Rehash the queue until its size is 1.
> + while (q.size() > 1)
> + q = hashQueue(q);
> +
> + this.treeHash = q.poll().toString();
> + this.hash = hasher.hash().toString();
Can you keep this as a `HashCode` for type-safety? The ultimate consumer can
transform it into a `String` when needed.
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