Returns an object that represents the compound structure of the element.
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
A copy of the compound structure is returned and changes made to it will not apply to the type until SetCompoundStructure is called. From this object the layers of a compound structure can be accessed. If the element does not have a compound structure then this method will return a null reference ( Nothing in Visual Basic) .