@Override
    public DescribeFleetInstancesResult describeFleetInstances(DescribeFleetInstancesRequest request) {
        request = beforeClientExecution(request);
        return executeDescribeFleetInstances(request);
    }
<p>
Describes the running instances for the specified EC2 Fleet.
</p>
<note>
<p>
Currently, <code>DescribeFleetInstances</code> does not support fleets of type <code>instant</code>. Instead, use
<code>DescribeFleets</code>, specifying the <code>instant</code> fleet ID in the request.
</p>
</note>
<p>
For more information, see <a
href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/manage-ec2-fleet.html#monitor-ec2-fleet">Describe your
EC2 Fleet</a> in the <i>Amazon EC2 User Guide</i>.
</p>

@param describeFleetInstancesRequest
@return Result of the DescribeFleetInstances operation returned by the service.
@sample AmazonEC2.DescribeFleetInstances
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/DescribeFleetInstances" target="_top">AWS API
     Documentation</a>
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/AmazonEC2Client.java