{"ast_node_type":"function","tokens":[{"end":74,"kind":"keyword","start":0,"text":"fn"}]}
    fn check_expr(&mut self, cx: &LateContext<'_>, expr: &hir::Expr<'_>) {
impl LateLintPass<'_> for BadOptAccess {
        let hir::ExprKind::Field(base, target) = expr.kind else { return };