nsCOMPtr<nsIXBLBinding> binding; GetBinding(aParent, getter_AddRefs(binding));  if (binding) return binding->GetInsertionPoint(aChild, aResult, aIndex);  return NS_OK;
nsXBLBinding *binding = nsBindingManager::GetBinding(aParent); return binding ? binding->GetInsertionPoint(aChild, aIndex) : nsnull;
nsBindingManager::GetInsertionPoint(nsIContent* aParent, nsIContent* aChild, nsIContent** aResult, PRUint32* aIndex){  nsCOMPtr<nsIXBLBinding> binding;  GetBinding(aParent, getter_AddRefs(binding));    if (binding)    return binding->GetInsertionPoint(aChild, aResult, aIndex);    return NS_OK;}