Although a LinkPanel is normally a Link's VisualElement, it may be the root element of a Node in two cases. If the panel is the element of an Adornment, and the adornment's Adornment.AdornedPart is a Link, this returns that link's Link.Path. If the panel is the element of a node that is a label of a link (i.e. Node.LabeledLink is non-null), then this returns that link's path.