64 typename types_traits<Key, Mapped, _Alloc, false>::value_type,
65 typename tree_node_metadata_dispatch<Key, Mapped, Cmp_Fn, Node_Update,
85 typename types_traits<Key, null_type, _Alloc, false>::value_type,
86 typename tree_node_metadata_dispatch<Key, null_type, Cmp_Fn, Node_Update,