code: public void setViewThroughConversionCost(com.google.api.ads.admanager.axis.v201805.Money viewThroughConversionCost) {
          this.viewThroughConversionCost = viewThroughConversionCost;
      }
docs: Sets the viewThroughConversionCost value for this LineItemActivityAssociation.
  
  @param viewThroughConversionCost   * The amount of money to attribute per view through conversion.
  This attribute is
  required for creating a {@code LineItemActivityAssociation}.
  The currency code is readonly
  and should match the {@link LineItem}.