code: public void setTargeting(com.google.api.ads.admanager.axis.v201805.Targeting targeting) {
          this.targeting = targeting;
      }
docs: Sets the targeting value for this ProposalLineItem.
  
  @param targeting   * Contains the targeting criteria for the {@code ProposalLineItem}.
  This attribute is
  optional during creation and defaults to the {@link
  Product#targeting product's targeting}.