public void setBillingPeriod(String billingPeriod) {
        this.billingPeriod = billingPeriod;
    }
<p>
The billing period for which the pricing rule associations are to be listed.
</p>

@param billingPeriod
       The billing period for which the pricing rule associations are to be listed.
aws-java-sdk-billingconductor/src/main/java/com/amazonaws/services/billingconductor/model/ListPricingRulesAssociatedToPricingPlanRequest.java