anchor.diff:          subscriptionId
   
       member this.SubscribeScheduled<'d, 'w when 'w : not struct> event callback =
  -        this.SubscribeScheduledPlus<'d, 'w> (this.AllocSubscriptionId ()) event callback
  +        this.SubscribeScheduledPlus<'d, 'w> (this.AllocSubscriptionId ()) event callback |> ignore<uint>
   
       member this.UnsubscribeScheduled event subscriptionId =
           this.Unsubscribe
  
positive.code:             world
          | (false, _) -> world
  
      member this.RegisterEntitiesPlus elideEvents count comps archetypeId (world : 'w) =
  
          // get archetype
  
negative.code:         'c7 : struct and 'c7 :> 'c7 Component and
          'c8 : struct and 'c8 :> 'c8 Component and
          'c9 : struct and 'c9 :> 'c9 Component>
          (ecs, ?compName, ?comp2Name, ?comp3Name, ?comp4Name, ?comp5Name, ?comp6Name, ?comp7Name, ?comp8Name, ?comp9Name, ?subqueries) =
          Query
              (hashSetPlus HashIdentity.Structural
                  [Option.getOrDefault typeof<'c>.Name compName
  