anchor.diff:  
       testList "Records" [
         testCase "parse address" <| fun _ ->
  -        let address = (parseFSON typeof<Address> data) :?> Address
  +        let address = (parseFSON typeof<Address> addrData) :?> Address
           Expect.isTrue (address.City = "Vancouver") "Parse an address and check city."
       ]
   
  
positive.code:     Postal: string option;
      Country: string;}
  
  let data = " 
  Number: 3670 
  Street: 245 West Howe 
  City: Vancouver 
  Region: BC 
  Country: Canada 
   "
  
  [<Tests>]
  let tests =
  
negative.code:       testCase "zero field DU" <| fun _ -> Expect.equal ((parseFSON typeof<Region> " BC ") :?> Region)  Region.BC ""
      ]
  
      testList "Collections" [
        testCase "DU List" <| fun _ -> 
          Expect.equal ((parseFSON typeof<Region list> regionsData) :?> Region list) [BC; Alberta] ""
  
        testCase "String List" <| fun _ -> 
          Expect.equal ((parseFSON typeof<string list> regionsData) :?> string list) ["BC"; "Alberta"] ""
  
        testCase "DU Array" <| fun _ -> 
          Expect.equal ((parseFSON typeof<Region array> regionsData) :?> Region array) [|BC; Alberta|] ""
      ]
    ]
  
  
  