DuctPressureDropData.CategoryId
Description:
The category id of duct curves. It will be OST_DuctCurves, OST_FlexDuctCurves, or OST_PlaceHolderDucts.
The category id of duct curves. It will be OST_DuctCurves, OST_FlexDuctCurves, or OST_PlaceHolderDucts.
public ElementId CategoryId { get; }