anchor.diff:                                  getEventTypeInInterface p.EventHandler.Value i.Name
                               else 
                                   "Event"
  -                        String.Format("(ev: {0}) => any", eType)
  +                        String.Format("({0}, ev: {1}) => any", EmitEventHandlerThis(flavor, prefix), eType)
                       | _ -> DomTypeToTsType p.Type
                   let pTypeAndNull = if p.Nullable.IsSome then makeNullable pType else pType
                   let readOnlyModifier = if p.ReadOnly.IsSome && prefix = "" then "readonly " else ""
  
positive.code:     match GetGlobalPollutor flavor with
      | Some gp ->
          EmitAllMembers flavor gp
          EmitEventHandlers "declare var " gp
      | _ -> ()
  
      EmitTypeDefs flavor
  
negative.code: 
          let prefix = ""
          EmitMembers flavor prefix EmitScope.InstanceOnly i
          EmitEventHandlers flavor prefix i
          EmitIndexers EmitScope.InstanceOnly i
  
          Pt.decreaseIndent()
  