code: public com.google.api.ads.adwords.axis.v201809.cm.AssetLink getLongHeadline() {
          return longHeadline;
      }
docs: Gets the longHeadline value for this MultiAssetResponsiveDisplayAd.
  
  @return longHeadline   * Long format of the headline of the ad. Maximum display width
  is 90.
  <span class="constraint Selectable">This field
  can be selected using the value "MultiAssetResponsiveDisplayAdLongHeadline".</span>
  <span class="constraint Required">This field is required and should
  not be {@code null} when it is contained within {@link Operator}s
  : ADD.</span>