code: public void setOperatingSystems(com.google.api.ads.admanager.axis.v201805.Technology[] operatingSystems) {
          this.operatingSystems = operatingSystems;
      }
docs: Sets the operatingSystems value for this OperatingSystemTargeting.
  
  @param operatingSystems   * Operating systems that are being targeted or excluded by the
  {@link LineItem}.