Determines whether the first of two joined elements is cutting the second element. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 16.0.0.0 (16.0.0.0) 
  Since:  2014 
Syntax
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Parameters
- document
 -  Type:  Autodesk.Revit.DB Document  
The document containing the two elements. 
- firstElement
 -  Type:  Autodesk.Revit.DB Element  
The first element. 
- secondElement
 -  Type:  Autodesk.Revit.DB Element  
The second element. 
Return Value
True if the secondElement is cut by the firstElement, false if the secondElement is cut by the firstElement.Remarks
 This functionality is not available for family documents. 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentException | document is not a project document. -or- The element firstElement was not found in the given document. -or- The element secondElement was not found in the given document. -or- The elements are not joined. | 
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL |