/// <summary>
    /// Run the code example.
    /// </summary>
    /// <param name="user">The DFP user object running the code example.</param>
    public override void Run(DfpUser user) {
      // Get the ContentMetadataKeyHierarchy service.
      ContentMetadataKeyHierarchyService contentMetadataKeyHierarchyService =
          (ContentMetadataKeyHierarchyService) user.GetService(
          DfpService.v201505.ContentMetadataKeyHierarchyService);

      // Set the ID of the content metadata key hierarchy to update.
      long contentMetadataKeyHierarchyId =
          long.Parse(_T("INSERT_CONTENT_METADATA_KEY_HIERARCHY_ID_HERE"));

      // Set the ID of the custom targeting key to be added as a hierarchy level
      long customTargetingKeyId = long.Parse(_T("INSERT_CUSTOM_TARGETING_KEY_ID_HERE"));

      // Create a statement to get content metadata key hierarchies.
      StatementBuilder statementBuilder = new StatementBuilder()
          .Where("WHERE id = :id")
          .OrderBy("id ASC")
          .Limit(1)
          .AddValue("id", contentMetadataKeyHierarchyId);

      try {
        ContentMetadataKeyHierarchyPage page = contentMetadataKeyHierarchyService
            .getContentMetadataKeyHierarchiesByStatement(statementBuilder.ToStatement());

        ContentMetadataKeyHierarchy contentMetadataKeyHierarchy = page.results[0];

        // Update the content metadata key hierarchy by adding a hierarchy level.
        ContentMetadataKeyHierarchyLevel[] hierarchyLevels = contentMetadataKeyHierarchy
            .hierarchyLevels;

        ContentMetadataKeyHierarchyLevel hierarchyLevel = new ContentMetadataKeyHierarchyLevel();
        hierarchyLevel.customTargetingKeyId = customTargetingKeyId;
        hierarchyLevel.hierarchyLevel = hierarchyLevels.Length + 1;

        List<ContentMetadataKeyHierarchyLevel> updatedHieratchyLevels =
           new List<ContentMetadataKeyHierarchyLevel>();
        updatedHieratchyLevels.AddRange(hierarchyLevels);
        updatedHieratchyLevels.Add(hierarchyLevel);

        contentMetadataKeyHierarchy.hierarchyLevels = updatedHieratchyLevels.ToArray();

        // Update the content hierarchy on the server.
        ContentMetadataKeyHierarchy[] contentMetadataKeyHierarchies =
            contentMetadataKeyHierarchyService.updateContentMetadataKeyHierarchies(
            new ContentMetadataKeyHierarchy[] {contentMetadataKeyHierarchy});

        foreach (ContentMetadataKeyHierarchy updatedContentMetadataKeyHierarchy in
            contentMetadataKeyHierarchies) {
          Console.WriteLine("Content metadata key hierarchy with ID \"{0}\", name " +
              "\"{1}\" was updated.", updatedContentMetadataKeyHierarchy.id,
              updatedContentMetadataKeyHierarchy.name);
        }
      } catch (Exception e) {
        Console.WriteLine("Failed to update content metadata key hierarchies. Exception " +
            "says \"{0}\"", e.Message);
      }
    }
    /// <summary>
    /// Run the code example.
    /// </summary>
    /// <param name="user">The DFP user object running the code example.</param>
    public override void Run(DfpUser user) {
      // Get the ContentMetadataKeyHierarchy service.
      ContentMetadataKeyHierarchyService contentMetadataKeyHierarchyService =
          (ContentMetadataKeyHierarchyService) user.GetService(
          DfpService.v201505.ContentMetadataKeyHierarchyService);

      // Set the IDs of the custom targeting keys for the hierarchy.
      long customTargetingKeyId1 = long.Parse(_T("INSERT_LEVEL_ONE_CUSTOM_TARGETING_KEY_ID_HERE"));
      long customTargetingKeyId2 = long.Parse(_T("INSERT_LEVEL_TWO_CUSTOM_TARGETING_KEY_ID_HERE"));

      List<ContentMetadataKeyHierarchyLevel> hierarchyLevels =
          new List<ContentMetadataKeyHierarchyLevel>();

      ContentMetadataKeyHierarchyLevel hierarchyLevel1 = new ContentMetadataKeyHierarchyLevel();
      hierarchyLevel1.customTargetingKeyId = customTargetingKeyId1;
      hierarchyLevel1.hierarchyLevel = 1;
      hierarchyLevels.Add(hierarchyLevel1);

      ContentMetadataKeyHierarchyLevel hierarchyLevel2 = new ContentMetadataKeyHierarchyLevel();
      hierarchyLevel2.customTargetingKeyId = customTargetingKeyId2;
      hierarchyLevel2.hierarchyLevel = 2;
      hierarchyLevels.Add(hierarchyLevel2);

      ContentMetadataKeyHierarchy contentMetadataKeyHierarchy = new ContentMetadataKeyHierarchy();
      contentMetadataKeyHierarchy.name = "Content hierarchy #" + new Random().Next(int.MaxValue);
      contentMetadataKeyHierarchy.hierarchyLevels = hierarchyLevels.ToArray();

      try {
        // Create the content metadata key hierarchy on the server.
        ContentMetadataKeyHierarchy[] contentMetadataKeyHierarchies =
            contentMetadataKeyHierarchyService.createContentMetadataKeyHierarchies(
            new ContentMetadataKeyHierarchy[] {contentMetadataKeyHierarchy});

        foreach (ContentMetadataKeyHierarchy createdContentMetadataKeyHierarchy in
            contentMetadataKeyHierarchies) {
          Console.WriteLine("A content metadata key hierarchy with ID \"{0}\", name " +
              "\"{1}\" and {2} levels was created.", createdContentMetadataKeyHierarchy.id,
              createdContentMetadataKeyHierarchy.name,
              createdContentMetadataKeyHierarchy.hierarchyLevels.Length);
        }
      } catch (Exception ex) {
        Console.WriteLine("Failed to create content metadata key hierarchies. Exception says " +
            "\"{0}\"", ex.Message);
      }
    }