NS_IMETHOD RemoveChild(nsIDOMNode* aOldChild, nsIDOMNode** aReturn) { return nsGenericElement::doRemoveChild(aOldChild, aReturn);
nsGenericContainerElement::RemoveChild(nsIDOMNode* aOldChild, nsIDOMNode** aReturn) { nsIContent* content = nsnull; *aReturn = nsnull;  if (nsnull == aOldChild) { return NS_ERROR_NULL_POINTER;
  NS_IMETHOD RemoveChild(nsIDOMNode* aOldChild, nsIDOMNode** aReturn)  {    return nsGenericElement::doRemoveChild(aOldChild, aReturn);  }