anchor.diff:          /// + Refined Soundex Filter
           /// + Soundex Filter
           /// For more details refer to http://flexsearch.net/docs/concepts/understanding-analyzers-tokenizers-and-filters/
  -        member val FilterName = Unchecked.defaultof<string> with get, set
  +        member val FilterName = defString with get, set
           
           /// Parameters required by the filter.
           member val Parameters = strDict()
  
positive.code: module HighlightOption = 
      /// Used for configuring the settings for text highlighting in the search results
      [<ToString; Sealed>]
      type Dto(fields : string[]) = 
          inherit DtoBase()
          
          /// Total number of fragments to return per document
  
negative.code:         inherit DtoBase()
          
          /// Name of the analyzer
          member val AnalyzerName = defString with get, set
          
          // AUTO
          member val Tokenizer = new Tokenizer.Dto() with get, set
          
          /// Filters to be used by the analyzer.
          member val Filters = new List<TokenFilter.Dto>() with get, set
  