code: public void setTargetedContentMetadata(com.google.api.ads.admanager.axis.v201811.ContentMetadataKeyHierarchyTargeting[] targetedContentMetadata) {
          this.targetedContentMetadata = targetedContentMetadata;
      }
docs: Sets the targetedContentMetadata value for this ContentTargeting.
  
  @param targetedContentMetadata   * A list of content metadata within hierarchies that are being
  targeted by the {@code LineItem}.