public ListBillingGroupCostReportsResult withBillingGroupCostReports(BillingGroupCostReportElement... billingGroupCostReports) {
        if (this.billingGroupCostReports == null) {
            setBillingGroupCostReports(new java.util.ArrayList<BillingGroupCostReportElement>(billingGroupCostReports.length));
        }
        for (BillingGroupCostReportElement ele : billingGroupCostReports) {
            this.billingGroupCostReports.add(ele);
        }
        return this;
    }
<p>
A list of <code>BillingGroupCostReportElement</code> retrieved.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setBillingGroupCostReports(java.util.Collection)} or
{@link #withBillingGroupCostReports(java.util.Collection)} if you want to override the existing values.
</p>

@param billingGroupCostReports
       A list of <code>BillingGroupCostReportElement</code> retrieved.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-billingconductor/src/main/java/com/amazonaws/services/billingconductor/model/ListBillingGroupCostReportsResult.java