@Override
    public String toString() {
        return "(groupId=" + groupId +
            ", isSimpleConsumerGroup=" + isSimpleConsumerGroup +
            ", members=" + members.stream().map(MemberDescription::toString).collect(Collectors.joining(",")) +
            ", partitionAssignor=" + partitionAssignor +
            ", type=" + type +
            ", state=" + state +
            ", coordinator=" + coordinator +
            ", authorizedOperations=" + authorizedOperations +
            ")";
    }
authorizedOperations for this group, or null if that information is not known.
clients/src/main/java/org/apache/kafka/clients/admin/ConsumerGroupDescription.java