code: public com.google.api.ads.admanager.axis.v201808.DeviceCapabilityTargeting getDeviceCapabilitySegment() {
          return deviceCapabilitySegment;
      }
docs: Gets the deviceCapabilitySegment value for this ProductSegmentation.
  
  @return deviceCapabilitySegment   * The device capability segmentation. {@link
  DeviceCapabilityTargeting#excludedDeviceCapabilities}
  must be empty or null.
  
  <p>This attribute is optional.