anchor.diff:                              | Some entityState -> entityState
                       entityState
                   | None -> Unchecked.defaultof<EntityState>
  -            else entityStateOpt
  +            | _ -> entityStateOpt
   
           static member private entityStateAdder entityState entity world =
               let screenDirectory =
  
positive.code:             | Some entityState -> entityState
              | None -> failwith ^ "Could not find entity with address '" + scstring entity.EntityAddress + "'."
  #else
              World.entityStateNullableFinder entity world
  #endif
  
          static member private setEntityState entityState entity world =
  
negative.code:             World.publish6 { Participant = entity; PropertyName = propertyName; OldWorld = oldWorld } changeEventAddress eventTrace entity false world
  
          static member private getEntityStateOpt entity world =
              let entityStateOpt = World.entityStateFinder entity world
              match entityStateOpt :> obj with
              | null -> None
              | _ -> Some entityStateOpt
  
          static member private getEntityState entity world =
  #if DEBUG
  