String json(String... topic) {
            String topicStr = Arrays.stream(topic).map(t -> "{\"topic\": \"" + t + "\"}").collect(Collectors.joining(","));
            return "{\"topics\": [" + topicStr + "],\"version\":1}";
        }
Test rig for measuring throttling performance. Configure the parameters for a set of experiments, then execute them
and view the html output file, with charts, that are produced. You can also render the charts to the screen if
you wish.

Currently you'll need about 40GB of disk space to run these experiments (largest data written x2). Tune the msgSize
& #partitions and throttle to adjust this.
tools/src/test/java/org/apache/kafka/tools/other/ReplicationQuotasTestRig.java