@Override
    public AddInstanceFleetResult addInstanceFleet(AddInstanceFleetRequest request) {
        request = beforeClientExecution(request);
        return executeAddInstanceFleet(request);
    }
<p>
Adds an instance fleet to a running cluster.
</p>
<note>
<p>
The instance fleet configuration is available only in Amazon EMR releases 4.8.0 and later, excluding 5.0.x.
</p>
</note>

@param addInstanceFleetRequest
@return Result of the AddInstanceFleet operation returned by the service.
@throws InternalServerException
        This exception occurs when there is an internal failure in the Amazon EMR service.
@throws InvalidRequestException
        This exception occurs when there is something wrong with user input.
@sample AmazonElasticMapReduce.AddInstanceFleet
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/elasticmapreduce-2009-03-31/AddInstanceFleet"
     target="_top">AWS API Documentation</a>
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/AmazonElasticMapReduceClient.java