private void runExecuteAssignment(Boolean additional,
                                      String reassignmentJson,
                                      Long interBrokerThrottle,
                                      Long replicaAlterLogDirsThrottle) throws RuntimeException {
        try (Admin admin = Admin.create(Collections.singletonMap(CommonClientConfigs.BOOTSTRAP_SERVERS_CONFIG, clusterInstance.bootstrapServers()))) {
            executeAssignment(admin, additional, reassignmentJson,
                    interBrokerThrottle, replicaAlterLogDirsThrottle, 10000L, Time.SYSTEM);
        } catch (ExecutionException | InterruptedException | JsonProcessingException | TerseException e) {
            throw new RuntimeException(e);
        }
    }
Describe the broker-level throttles in the cluster.

@return                A map whose keys are broker IDs and whose values are throttle
                       information.  The nested maps are keyed on throttle name.
tools/src/test/java/org/apache/kafka/tools/reassign/ReassignPartitionsCommandTest.java