public void setInstanceFleetId(String instanceFleetId) {
        this.instanceFleetId = instanceFleetId;
    }
<p>
The unique identifier of the instance fleet to which an Amazon EC2 instance belongs.
</p>

@param instanceFleetId
       The unique identifier of the instance fleet to which an Amazon EC2 instance belongs.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/Instance.java