NS_ADDREF_THIS();
AnonymousElement::QueryInterface(REFNSIID aIID, void** aInstancePtr)      {           if (aIID.Equals(kIStyledContentIID)) {    nsIStyledContent* tmp = this;    *aInstancePtr = (void*) tmp;    return NS_OK;  } else if (aIID.Equals(kIAnonymousContentIID)) {    nsIAnonymousContent* tmp = this;    *aInstancePtr = (void*) tmp;    return NS_OK;  }  return nsXMLElement::QueryInterface(aIID, aInstancePtr);                                                                                                                                                       }