*aResult = NS_STATIC_CAST(nsXBLPrototypeBinding*, mBindingTable->Get(&key));
*aResult = NS_STATIC_CAST(nsIXBLPrototypeBinding*, mBindingTable->Get(&key));
nsXBLDocumentInfo::GetPrototypeBinding(const nsACString& aRef, nsXBLPrototypeBinding** aResult){  *aResult = nsnull;  if (!mBindingTable)    return NS_OK;  const nsPromiseFlatCString& flat = PromiseFlatCString(aRef);  nsCStringKey key(flat.get());  *aResult = NS_STATIC_CAST(nsXBLPrototypeBinding*, mBindingTable->Get(&key));  return NS_OK;}