anchor.diff:          //this test
           Assert.True true
           |> Prop.collect (a,b)
  +        
   
       type TypeToInstantiate() =
           [<Property>]
  
positive.code:             |> Seq.distinct
          Assert.Equal(1,Seq.length same)
          Assert.NotEqual<string>("should have failed", Seq.head same)
  
      [<Fact>]
      let ``should replay property with complex set of generators``() =
  
negative.code:             |> Seq.distinct
          Assert.Equal(1,Seq.length same)
          Assert.NotEqual<string>("should have failed", Seq.head same)
          Assert.Contains("(123,654321)", Seq.head same);
  
      [<Property(Replay="54321,67584")>]
      let ``should pick up replay seeds from PropertyAttribute without parens``(a:int, b:string) =
  