anchor.diff:                                      NotifyFilter = (NotifyFilters.LastWrite ||| NotifyFilters.Security ||| NotifyFilters.FileName),
                                       EnableRaisingEvents = true)
                               let handler _ =
  -                                reload fullPath |> ignore
  +                                reloader.Post(baseName, fullPath)
                               watcher.Changed.Add handler
                               watcher)
                           getOrLoadPath fullPath
  
positive.code: 
      static let watchers = ConcurrentDictionary<string, FileSystemWatcher>()
  
      static let getTemplate baseName name (templates: IDictionary<_,_>) : Template =
          match templates.TryGetValue name with
          | false, _ -> failwithf "Template not defined: %s/%A" baseName name
  
negative.code:             loaded.GetOrAdd(baseName, fun _ -> let t, _, _ = Parsing.ParseSource baseName src in t)
          let getOrLoadPath fullPath =
              loaded.GetOrAdd(baseName, fun _ -> let t, _, _ = Parsing.ParseSource baseName (File.ReadAllText fullPath) in t)
          let requireResources = Dictionary(StringComparer.InvariantCultureIgnoreCase)
          fillWith |> Seq.iter (function
              | TemplateHole.Elt (n, d) when not (obj.ReferenceEquals(d, null)) ->
  