[ObsoleteAttribute("This property is obsolete in Revit 2017. Use CategoryId instead.")]
public LoadNatureCategory NatureCategory { get; set; }

<ObsoleteAttribute("This property is obsolete in Revit 2017. Use CategoryId instead.")> _
Public Property NatureCategory As LoadNatureCategory
	Get
	Set

[ObsoleteAttribute(L"This property is obsolete in Revit 2017. Use CategoryId instead.")]
public:
property LoadNatureCategory NatureCategory {
	LoadNatureCategory get ();
	void set (LoadNatureCategory value);
}