Finds the KeyBasedTreeEntry associated with the given key value. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2015 
Syntax
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Parameters
- key
 -  Type:  System String  
The specified key value. 
Return Value
The KeyBasedTreeEntry corresponds to the given key value.Remarks
 If no matching KeyBasedTreeEntry can be found, null will be returned; The given key value cannot be an empty string. 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentException | key is an empty string. | 
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL |