static List<Node> getRandomNodes(final int nodeSize) {
        final List<Node> nodeList = new ArrayList<>(nodeSize);
        for (int i = 0; i < nodeSize; i++) {
            nodeList.add(new Node(i, "node" + i, 1, RACK_PREFIX + i));
        }
        final Random rand = getRandom();
        Collections.shuffle(nodeList, rand);
        return nodeList;
    }
Builds a ProcessId with a UUID by repeating the given number n. For valid n, it is guaranteed that the returned UUIDs satisfy
the same relation relative to others as their parameter n does: iff n < m, then uuidForInt(n) < uuidForInt(m)
streams/src/test/java/org/apache/kafka/streams/processor/internals/assignment/AssignmentTestUtils.java