public void setStateChangeReason(InstanceFleetStateChangeReason stateChangeReason) {
        this.stateChangeReason = stateChangeReason;
    }
<p>
Provides status change reason details for the instance fleet.
</p>

@param stateChangeReason
       Provides status change reason details for the instance fleet.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/InstanceFleetStatus.java