@Override
    public PurchaseHostReservationResult purchaseHostReservation(PurchaseHostReservationRequest request) {
        request = beforeClientExecution(request);
        return executePurchaseHostReservation(request);
    }
<p>
Purchase a reservation with configurations that match those of your Dedicated Host. You must have active
Dedicated Hosts in your account before you purchase a reservation. This action results in the specified
reservation being purchased and charged to your account.
</p>

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