CallbackNode(String path, { SimpleNodeProvider provider, ActionFunction onActionInvoke, ChildChangedCallback onChildAdded, ChildChangedCallback onChildRemoved, SimpleCallback onCreated, SimpleCallback onRemoving, LoadChildCallback onLoadChild, SimpleCallback onSubscribe, ValueCallback<bool> onValueSet, SimpleCallback onUnsubscribe })

Source 

CallbackNode(String path,
    {SimpleNodeProvider provider,
      this.onActionInvoke,
    ChildChangedCallback onChildAdded,
    ChildChangedCallback onChildRemoved,
    SimpleCallback onCreated,
    SimpleCallback onRemoving,
    LoadChildCallback onLoadChild,
    SimpleCallback onSubscribe,
    ValueCallback<bool> onValueSet,
    SimpleCallback onUnsubscribe})
    : onChildAddedCallback = onChildAdded,
      onChildRemovedCallback = onChildRemoved,
      onCreatedCallback = onCreated,
      onRemovingCallback = onRemoving,
      onLoadChildCallback = onLoadChild,
      onSubscribeCallback = onSubscribe,
      onUnsubscribeCallback = onUnsubscribe,
      onValueSetCallback = onValueSet,
      super(path, provider);