{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"self.borrow(assignee_place,"}]}
        self.borrow(assignee_place, diag_expr_id, ty::BorrowKind::Mutable);
    fn mutate(&mut self, assignee_place: &PlaceWithHirId<'tcx>, diag_expr_id: HirId) {
    }