// --- Special handling for UIDocument to avoid infinite loops from VisualElement hierarchy ---
  if (componentType.FullName == "UnityEngine.UIElements.UIDocument")
  {
      var uiDocProperties = new Dictionary<string, object>();

      try
      {
          // Get panelSettings reference safely
          var panelSettingsProp = componentType.GetProperty("panelSettings");
          if (panelSettingsProp != null)
          {
              var panelSettings = panelSettingsProp.GetValue(c) as UnityEngine.Object;
              if (panelSettings != null)
              {
                  var assetPath = AssetDatabase.GetAssetPath(panelSettings);
                  uiDocProperties["panelSettings"] = string.IsNullOrEmpty(assetPath)
                      ? panelSettings.name
                      : assetPath;
              }
          }

          // Get visualTreeAsset reference safely (the UXML file)
          var visualTreeAssetProp = componentType.GetProperty("visualTreeAsset");
          if (visualTreeAssetProp != null)
          {
              var visualTreeAsset = visualTreeAssetProp.GetValue(c) as UnityEngine.Object;
              if (visualTreeAsset != null)
              {
                  var assetPath = AssetDatabase.GetAssetPath(visualTreeAsset);
                  uiDocProperties["visualTreeAsset"] = string.IsNullOrEmpty(assetPath)
                      ? visualTreeAsset.name
                      : assetPath;
              }
          }

          // Get sortingOrder safely
          var sortingOrderProp = componentType.GetProperty("sortingOrder");
          if (sortingOrderProp != null)
          {
              uiDocProperties["sortingOrder"] = sortingOrderProp.GetValue(c);
          }

          // Get enabled state
          var enabledProp = componentType.GetProperty("enabled");
          if (enabledProp != null)
          {
              uiDocProperties["enabled"] = enabledProp.GetValue(c);
          }

          // NOTE: rootVisualElement is intentionally skipped - it contains circular
          // parent/child references that cause infinite serialization loops
          uiDocProperties["_note"] = "rootVisualElement skipped to prevent circular reference infinite loop";
      }
      catch (Exception e)
      {
          McpLog.Warn($"[GetComponentData] Error reading UIDocument properties: {e.Message}");
      }

      return new Dictionary<string, object>
      {
          { "typeName", componentType.FullName },
          { "instanceID", c.GetInstanceID() },
          { "properties", uiDocProperties },
          { "name", c.name },
          { "tag", c.tag },
          { "gameObjectInstanceID", c.gameObject?.GetInstanceID() ?? 0 }
      };
  }
  // --- End Special handling for UIDocument ---