assert !pos.isNull() && size >= 0;
            if (size == 0) {
                return;
            }

            if (size < largestInNextBlock) {
                FreeListBlock next = getNextBlock();
                next.add(pos, size);
                return;
            }

            FreeListEntry entry = new FreeListEntry(pos, size);
            int index = Collections.binarySearch(entries, entry);

    public boolean incrementToken() throws IOException {
        while (true) {
            final MyToken nextToken = getNextUniqueToken(queue, prevToken);
            if (nextToken == null) {
                getNextBlock();
                if (block.length() == 0) {
                    return false;
                }
                consultDictionary();
                tokenizeWholeBlock();
            } else {