code: public void setBillingAttribute(com.google.api.ads.admanager.axis.v201805.RichMediaStudioCreativeBillingAttribute billingAttribute) {
          this.billingAttribute = billingAttribute;
      }
docs: Sets the billingAttribute value for this BaseRichMediaStudioCreative.
  
  @param billingAttribute   * The billing attribute associated with this creative. This attribute
  is read only.