code: public com.google.api.ads.admanager.axis.v201811.DeviceManufacturerTargeting getDeviceManufacturerSegment() {
          return deviceManufacturerSegment;
      }
docs: Gets the deviceManufacturerSegment value for this ProductSegmentation.
  
  @return deviceManufacturerSegment   * The device manufacturer segmentation. {@link DeviceFamilyTargeting#isTargeted}
  must be {@code
  true}.
  
  <p>This attribute is optional.