{"ast_node_type":"function","tokens":[{"end":88,"kind":"keyword","start":0,"text":"fn"}]}
            fn is_in_arm<'tcx>(expr: &'tcx hir::Expr<'tcx>, tcx: TyCtxt<'tcx>) -> bool {
            // Don't add semicolon `;` at the end of `dbg!(x)` expr
                for (_, node) in tcx.hir_parent_iter(expr.hir_id) {