{"ast_node_type":"variable","tokens":[{"end":20,"kind":"keyword","start":0,"text":"let"}]}
        let def_id =
    fn get_resolution_id(&self, node_id: NodeId, span: Span) -> Result<DefId, ErrorGuaranteed> {
            self.resolver.get_partial_res(node_id).and_then(|r| r.expect_full_res().opt_def_id());