text: public String toString() {String[] units = { "bytes", "KiB", "MiB", "GiB" };long sz = getIndexSize();int u = 0;while (1024 <= sz && u < units.length - 1) {int rem = (int) (sz % 1024);sz /= 1024;if (rem != 0)sz++;u++;}return "DeltaIndex[" + sz + " " + units[u] + "]";}