public void setLastStateChangeReason(String lastStateChangeReason) {
        this.lastStateChangeReason = lastStateChangeReason;
    }
<p>
Details regarding the state of the instance group.
</p>

@param lastStateChangeReason
       Details regarding the state of the instance group.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/InstanceGroupDetail.java