code: public com.google.api.ads.admanager.axis.v201902.LineItemDiscountType getDiscountType() {
          return discountType;
      }
docs: Gets the discountType value for this LineItemSummary.
  
  @return discountType   * The type of discount being applied to a {@code LineItem}, either
  percentage
  based or absolute. This attribute is optional and
  defaults to
  {@link LineItemDiscountType#PERCENTAGE}.