Function getKeyForIndex

fdbserver/workloads/WriteDuringRead.actor.cpp:707–714

	Key getRandomKey() { return getKeyForIndex(deterministicRandom()->randomInt(0, nodes)); }

	Key getKeyForIndex(int idx) {
		idx += minNode;
		if (adjacentKeys) {
			return Key(keyPrefix + (idx ? std::string(idx, '\x00') : ""));
		} else {
			return Key(keyPrefix + format("%010d", idx));
		}
	}

	Key versionStampKeyForIndex(int idx) {
		Key result = KeyRef(getKeyForIndex(idx).toString() + std::string(14, '\x00'));