private static String createIpAddresses(String... ipAddress) {
        return "\"ipAddresses\":[" +
                Arrays.stream(ipAddress)
                      .map(ip -> "\"" + ip + "\"")
                      .collect(Collectors.joining(",")) +
                "],";
    }
Tests the rendering of each node separately to make it easier to find errors
node-repository/src/test/java/com/yahoo/vespa/hosted/provision/restapi/NodesV2ApiTest.java