@Override
    public PurchaseReservedInstancesOfferingResult purchaseReservedInstancesOffering(PurchaseReservedInstancesOfferingRequest request) {
        request = beforeClientExecution(request);
        return executePurchaseReservedInstancesOffering(request);
    }
<p>
Purchases a Reserved Instance for use with your account. With Reserved Instances, you pay a lower hourly rate
compared to On-Demand instance pricing.
</p>
<p>
Use <a>DescribeReservedInstancesOfferings</a> to get a list of Reserved Instance offerings that match your
specifications. After you've purchased a Reserved Instance, you can check for your new Reserved Instance with
<a>DescribeReservedInstances</a>.
</p>
<p>
To queue a purchase for a future date and time, specify a purchase time. If you do not specify a purchase time,
the default is the current time.
</p>
<p>
For more information, see <a
href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/concepts-on-demand-reserved-instances.html">Reserved
Instances</a> and <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ri-market-general.html">Sell in
the Reserved Instance Marketplace</a> in the <i>Amazon EC2 User Guide</i>.
</p>

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