code: public com.google.api.ads.admanager.axis.v201808.ValueSourceType getAdditionalTermsSource() {
          return additionalTermsSource;
      }
docs: Gets the additionalTermsSource value for this ProductMarketplaceInfo.
  
  @return additionalTermsSource   * Specifies the source of the {@link #additionalTerms} value.
  To revert an overridden value to its default, set this field to {@link
  ValueSourceType#PARENT}.