Insert the specified item with the specified key into the map. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
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Parameters
- key
-  Type:  System String  
 The key to be used for inserting the item into the map.
- item
-  Type:  Autodesk.Revit.DB Parameter  
 The item to be inserted into the map.