@Override
    public String toString() {
        return "[version=" + usedVersion
            + ", supported version=" + commonlySupportedVersion
            + ", active tasks=" + activeTasks
            + ", standby tasks=" + standbyTasks
            + ", partitions by host=" + partitionsByHost
            + ", standbyPartitions by host=" + standbyPartitionsByHost
            + "]";
    }
@throws TaskAssignmentException if method fails to decode the data or if the data version is unknown
streams/src/main/java/org/apache/kafka/streams/processor/internals/assignment/AssignmentInfo.java