Determines whether the AlphanumericRevisionSettings object is in a valid state. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 16.0.0.0 (16.0.0.0) 
  Since:  2016 
Syntax
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Return Value
True if the settings are valid.Remarks
 The AlphanumericRevisionSettings should have at least one string in its revision numbering sequence.