Query the spatial element boundary face information with the given face. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2012 
Syntax
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| Visual Basic | 
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Parameters
- face
-  Type:  Autodesk.Revit.DB Face  
 The face from the spatial element's geometry.
Return Value
Sub-faces related to the room bounding elements that define the spatial element face. Returns a null reference ( Nothing in Visual Basic) if there is no corresponding boundary information with the given face.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL |