How do you code the Infragistics tree for unlimited levels of hierarchy? I.e. sub-nodes under sub-nodes under sub-nodes, etc.

Desired result:

Main node 1

    - Sub node 1

    - Sub node 2

        - Sub-sub node 1

            - Sub-sub-sub node

    - Sub node 3, etc.

Here is my model class. Notice the "ChildItems" list inside it.

public class TreeListItem : ICloneable, IComparable, IComparable<TreeListItem>
{
    public string Text { get; set; }
    public object Value { get; set; }
    public string Base64ImageUrl { get; set; } = "";
    public List<TreeListItem> ChildItems = new List<TreeListItem>();
}

Here is my MVC view code, which only shows the first level without any child items.

@(Html.Infragistics().Tree()
.ID("FilterTree")
.Bindings(b1 =>
{
b1
.ValueKey("Value")
.TextKey("Text")
.ImageUrlKey("Base64ImageUrl")
.ChildDataProperty("ChildItems");
})
.DataSource(Model.TreeListItems)
.DataBind()
.Render()
)

This also did not show any child items:

@(Html.Infragistics().Tree()
.ID("FilterTree")
.Bindings(b1 =>
{
b1
.ValueKey("Value")
.TextKey("Text")
.ImageUrlKey("Base64ImageUrl")
.ChildDataProperty("ChildItems")
.Bindings(b2 =>
b2
.ValueKey("Value")
.TextKey("Text")
.ImageUrlKey("Base64ImageUrl")
.ChildDataProperty("ChildItems")
);
})
.DataSource(Model.TreeListItems)
.DataBind()
.Render()
)