code: public void setDeviceCategoryTargeting(com.google.api.ads.admanager.axis.v201902.DeviceCategoryTargeting deviceCategoryTargeting) {
          this.deviceCategoryTargeting = deviceCategoryTargeting;
      }
docs: Sets the deviceCategoryTargeting value for this TechnologyTargeting.
  
  @param deviceCategoryTargeting   * The device categories being targeted by the {@link LineItem}.