code: public com.google.api.ads.adwords.axis.v201809.cm.DisplayCallToAction getMarketingImageDisplayCallToAction() {
          return marketingImageDisplayCallToAction;
      }
docs: Gets the marketingImageDisplayCallToAction value for this GmailAd.
  
  @return marketingImageDisplayCallToAction   * Display-call-to-action of the marketing image. The DisplayCallToAction.urlId
  field cannot be
  set when setting this field.