public GetReservationPurchaseRecommendationRequest withServiceSpecification(ServiceSpecification serviceSpecification) {
        setServiceSpecification(serviceSpecification);
        return this;
    }
<p>
The hardware specifications for the service instances that you want recommendations for, such as standard or
convertible Amazon EC2 instances.
</p>

@param serviceSpecification
       The hardware specifications for the service instances that you want recommendations for, such as standard
       or convertible Amazon EC2 instances.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-costexplorer/src/main/java/com/amazonaws/services/costexplorer/model/GetReservationPurchaseRecommendationRequest.java