+ [ImplementedInPrivateScript, OnlyExposedToPrivateScript] void createdCallback();
+ [ImplementedInPrivateScript, OnlyExposedToPrivateScript] void attachedCallback();
+ [ImplementedInPrivateScript, OnlyExposedToPrivateScript] void detachedCallback();
+ [ImplementedInPrivateScript, OnlyExposedToPrivateScript] void attributeChangedCallback(DOMString name, DOMString oldValue, DOMString newValue);
+