code: public void setDeviceManufacturerSegment(com.google.api.ads.admanager.axis.v201902.DeviceManufacturerTargeting deviceManufacturerSegment) {
          this.deviceManufacturerSegment = deviceManufacturerSegment;
      }
docs: Sets the deviceManufacturerSegment value for this ProductSegmentation.
  
  @param deviceManufacturerSegment   * The device manufacturer segmentation. {@link DeviceFamilyTargeting#isTargeted}
  must be {@code
  true}.
  
  <p>This attribute is optional.