unity/EditorPlugin/SinceUnity.7000.0/FindUsages/Window/FindUsagesTreeView.cs [125:138]:
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    private void CreateAnimationEventItem([NotNull] TreeViewItem<int> animationTreeRoot,
                                          [NotNull] AbstractUsageElement animationElement,
                                          ref int id)
    {
        var findUsagesTreeViewItem = new FindUsagesTreeViewItem(id, animationElement)
        {
            id = id,
            displayName = animationElement.FileName,
            icon = (Texture2D) EditorGUIUtility.IconContent(animationElement.TerminalNodeImage)?.image
        };
        myFindResultItems[id] = findUsagesTreeViewItem;
        animationTreeRoot.AddChild(findUsagesTreeViewItem);
        id++;
    }
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unity/EditorPlugin/Unity.2019.2/FindUsages/Window/FindUsagesTreeView.cs [125:138]:
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    private void CreateAnimationEventItem([NotNull] TreeViewItem animationTreeRoot,
                                          [NotNull] AbstractUsageElement animationElement,
                                          ref int id)
    {
        var findUsagesTreeViewItem = new FindUsagesTreeViewItem(id, animationElement)
        {
            id = id,
            displayName = animationElement.FileName,
            icon = (Texture2D) EditorGUIUtility.IconContent(animationElement.TerminalNodeImage)?.image
        };
        myFindResultItems[id] = findUsagesTreeViewItem;
        animationTreeRoot.AddChild(findUsagesTreeViewItem);
        id++;
    }
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