public ListBillingGroupCostReportsFilter withBillingGroupArns(String... billingGroupArns) {
        if (this.billingGroupArns == null) {
            setBillingGroupArns(new java.util.ArrayList<String>(billingGroupArns.length));
        }
        for (String ele : billingGroupArns) {
            this.billingGroupArns.add(ele);
        }
        return this;
    }
<p>
The list of Amazon Resource Names (ARNs) used to filter billing groups to retrieve reports.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setBillingGroupArns(java.util.Collection)} or {@link #withBillingGroupArns(java.util.Collection)} if you
want to override the existing values.
</p>

@param billingGroupArns
       The list of Amazon Resource Names (ARNs) used to filter billing groups to retrieve reports.
@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/ListBillingGroupCostReportsFilter.java