   _unregisterEvent = (registry, eventName, callback)->
     if eventName is "*"
       registry = {}
-    # reset the listener container so no event
+    # reset the listener container so no event3
     # will be propagated to previously registered
     # listener callbacks.
     else if callback and registry[eventName]


  constructor:->
    @KDEventEmitterEvents  = {}
    @_e = @KDEventEmitterEvents[@constructor.name] = {}

  emit:(eventName, args...)->
    @_e[eventName] ?= []


  on  :(eventName, callback) -> _on  @_e, eventName, callback
  off :(eventName, callback) -> _off @_e, eventName, callback

  once:(eventName, callback) ->
    _callback = =>
