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