code: public void setAdUnitSizes(com.google.api.ads.admanager.axis.v201902.AdUnitSize[] adUnitSizes) {
          this.adUnitSizes = adUnitSizes;
      }
docs: Sets the adUnitSizes value for this AdUnit.
  
  @param adUnitSizes   * The permissible creative sizes that can be served inside this
  ad unit. This
  attribute is optional. This attribute replaces the
  {@code sizes}
  attribute.