[HtmlTargetElement("c1-annotation-polygon")]
[RestrictChildren("c1-data-point", new string[] { })]
public class PolygonTagHelper : ShapeTagHelper<Polygon>, ITagHelper, ITagHelperComponent

<HtmlTargetElement("c1-annotation-polygon")>
<RestrictChildren("c1-data-point", New String() { })>
Public Class PolygonTagHelper
    Inherits ShapeTagHelper(Of Polygon)
    Implements ITagHelper, ITagHelperComponent