code: public void setOperatingSystemTargeting(com.google.api.ads.admanager.axis.v201811.OperatingSystemTargeting operatingSystemTargeting) {
          this.operatingSystemTargeting = operatingSystemTargeting;
      }
docs: Sets the operatingSystemTargeting value for this TechnologyTargeting.
  
  @param operatingSystemTargeting   * The operating systems being targeted by the {@link LineItem}.