public void setNumberOfInstancesToPurchase(String numberOfInstancesToPurchase) {
        this.numberOfInstancesToPurchase = numberOfInstancesToPurchase;
    }
<p>
The number of instances that Amazon Web Services recommends that you purchase.
</p>

@param numberOfInstancesToPurchase
       The number of instances that Amazon Web Services recommends that you purchase.
aws-java-sdk-costoptimizationhub/src/main/java/com/amazonaws/services/costoptimizationhub/model/RdsReservedInstancesConfiguration.java