This method will return the reference for the given fabrication id. 
   Namespace:   Autodesk.Revit.DB.Steel  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0) 
  Since:  2019 
Syntax
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Parameters
- aDoc
 -  Type:  Autodesk.Revit.DB Document  
Document in which to search for the reference. 
- guid
 -  Type:  System Guid  
The fabrication id for which a reference is required. 
Return Value
The reference to the element or subelement corresponding to the given id.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was null |