Checks whether the link with this id is loaded. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0) 
  Since:  2012 
Syntax
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Parameters
- document
-  Type:  Autodesk.Revit.DB Document  
 A document. Revit will see if typeId corresponds to a loaded link in this document.
- typeId
-  Type:  Autodesk.Revit.DB ElementId  
 An element id. Revit will check if typeId corresponds to a loaded link in the given document.
Return Value
True if typeId corresponds to a loaded RevitLinkType. False otherwise.Remarks
 Returns false if typeId is not the id of a RevitLinkType. 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was null |