anchor.diff:  
           interface IUseFixture<IndexFixture> with
               member this.SetFixture(data) =
  -                data.Setup(testData)
  +                data.Setup(testData, index)
                   this.Index <- data.Index
                   this.IndexName <- data.Index.IndexName
   
  
positive.code:     /// Base for creating all Xunit based indexing integration tests
      /// </summary>
      [<AbstractClass>]
      type IndexTestBase(testData : string) =
          member val Index = Unchecked.defaultof<_> with get, set
          member val IndexName = Unchecked.defaultof<_> with get, set
  
  
negative.code:     /// </summary>
      type IndexFixture() =
          member val Index = Unchecked.defaultof<_> with get, set
          member this.Setup(testData: string, index: Index) =
              if this.Index = Unchecked.defaultof<_> then
                  this.Index <- GenerateIndexWithTestData(testData, index)
          
          interface System.IDisposable with 
              member this.Dispose() = 
  