Gets a copy of options from settings for exporting. Modification on this options would not change the element. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0) 
  Since:  2022 
Syntax
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| Visual Basic | 
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Return Value
The options.Remarks
 Since the  [!:PDFExportOptions.FileName]  is not serialized, when  [!:Combine]  is     true  (  True  in Visual Basic)  (which means all the views would be exported into one PDF file, whose file name is specified by  [!:PDFExportOptions.FileName]  ), the returned  PDFExportOptions  would have  [!:PDFExportOptions.FileName]  as an empty string. The user has to set the  [!:PDFExportOptions.FileName]  before calling the  [!:Document.Export(string, IList{ElementId}, PDFExportOption)]  API exporting a "combined" PDF file.