public CustomLineItemVersionListElement withAssociationSize(Long associationSize) {
        setAssociationSize(associationSize);
        return this;
    }
<p>
The number of resources that are associated with the custom line item.
</p>

@param associationSize
       The number of resources that are associated with the custom line item.
@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/CustomLineItemVersionListElement.java