@Setup(Level.Trial)
    public void setup() {
        Map<Uuid, TopicMetadata> topicMetadata = createTopicMetadata();
        subscribedTopicDescriber = new SubscribedTopicDescriberImpl(topicMetadata);

        createGroupSpec();

        partitionAssignor = assignorType.assignor();

        if (assignmentType == AssignmentType.INCREMENTAL) {
            simulateIncrementalRebalance();
        }
    }
The assignment type is decided based on whether all the members are assigned partitions
for the first time (full), or incrementally when a rebalance is triggered.
jmh-benchmarks/src/main/java/org/apache/kafka/jmh/assignor/ServerSideAssignorBenchmark.java