{"ast_node_type":"function","tokens":[{"end":83,"kind":"keyword","start":0,"text":"fn"}]}
    fn add_note_for_packed_struct_derive(&self, err: &mut Diag<'_>, local: Local) {
    /// references to the struct's fields since doing so would be undefined behaviour
        let local_place: PlaceRef<'tcx> = local.into();