anchor.diff:      match GetGlobalPollutor flavor with
       | Some gp ->
           EmitAllMembers flavor gp
  -        EmitEventHandlers "declare var " gp
  +        EmitEventHandlers flavor "declare var " gp
       | _ -> ()
   
       EmitTypeDefs flavor
  
positive.code:         | Some i' -> EmitAllMembers flavor i'
          | _ -> ()
  
  let EmitEventHandlers (prefix: string) (i:Browser.Interface) =
      let emitEventHandler prefix (eHandler: EventHandler)  =
          let eventType =
              getEventTypeInInterface eHandler.EventName i.Name
  
          Pt.printl
              "%saddEventListener(type: \"%s\", listener: (ev: %s) => any, useCapture?: boolean): void;"
              prefix eHandler.EventName eventType
  
      let fPrefix = if prefix.StartsWith "declare var" then "declare function " else ""
  
  
negative.code:                                 getEventTypeInInterface p.EventHandler.Value i.Name
                              else 
                                  "Event"
                          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 ""
  