ant-design-blazor/components/tree/TreeIndent.razor

@namespace AntDesign
@typeparam TItem

<span class="ant-tree-indent" aria-hidden="true">
    @for (int i = 0; i < TreeLevel; i++)
    {
        if (TreeComponent.IndentTemplate != null)
        {
            @TreeComponent.IndentTemplate(SelfNode)
        }
        else
        {
            <span class="ant-tree-indent-unit ng-star-inserted"></span>
        }
    }
</span>