anchor.diff:              |> withColumns [| "_id"; "i1" |]
               |> searchAndExtract searchService
           result |> assertReturnedDocsCount 1
  -        result |> assertFieldValue 0 "_id" "CC"
  +        result |> assertFieldValue 0 "_id" "cc"
   
       member __.``Searching for i1 = add('10', add('10','20')) having nested functions should return record CC which is equal to 40``() = 
           let result = 
  
positive.code:             |> withColumns [| "_id"; "i1" |]
              |> searchAndExtract searchService
          result |> assertReturnedDocsCount 1
          result |> assertFieldValue 0 "_id" "CC"
  
      member __.``Searching for i1 > add('10','30') should return 3 records``() = 
          let result = 
  
negative.code:             |> withColumns [| "_id"; "i1" |]
              |> searchAndExtract searchService
          result |> assertReturnedDocsCount 1
          result |> assertFieldValue 0 "_id" "cc"
  
      member __.``Searching for i1 = add('3') should support only one parameter``() = 
          let result = 
  