anchor.diff:          for storeEntry in stores do
               storeEntry.Value.Grow ()
   
  -    member private this.AllocIndex =
  +    member private this.AllocIndex () =
           if freeList.Count > 0 then
               let index = Seq.head freeList
               freeList.Remove index |> ignore<bool>
  
positive.code:         subscriptionId
  
      member this.Subscribe<'d, 's> event callback =
          this.SubscribePlus<'d, 's> this.SubscriptionId event callback |> ignore
  
      member this.Unsubscribe event subscriptionId =
          let result =
  
negative.code: open System.Runtime.InteropServices
  open System.Threading.Tasks
  open Prime
  open System.Diagnostics
  
  /// Allows a value to always pass as equal with another of its same type.
  type [<CustomEquality; NoComparison; Struct>] 'a AlwaysEqual =
  