public AddInstanceFleetResult withInstanceFleetId(String instanceFleetId) {
        setInstanceFleetId(instanceFleetId);
        return this;
    }
<p>
The unique identifier of the instance fleet.
</p>

@param instanceFleetId
       The unique identifier of the instance fleet.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/AddInstanceFleetResult.java