protected override void RenderAttributes(AttributesBuilder builder) { base.RenderAttributes(builder); if (EndPoint != null) { builder.AddAttribute(nameof(EndPoint), AttributeHelper.PointToString(EndPoint.Value)); } if (StartPoint != null) { builder.AddAttribute(nameof(StartPoint), AttributeHelper.PointToString(StartPoint.Value)); } RenderAdditionalAttributes(builder); }