{"ast_node_type":"function","tokens":[{"end":78,"kind":"keyword","start":0,"text":"fn"}]}
    fn suggest_array_len(&self, expr: &'tcx hir::Expr<'tcx>, array_len: u64) {
        let parent_node = self.tcx.hir_parent_iter(expr.hir_id).find(|(_, node)| {