index = -index - 1;
                entries.add(index, entry);
            }

            entry.dataBlock = pos;
            store.write(this);

            maybeSplit();
        }

        private void maybeSplit() throws Exception {
            if (entries.size() > maxChildIndexEntries) {
                int splitPos = entries.size() / 2;
                IndexEntry splitEntry = entries.remove(splitPos);