{"ast_node_type":"variable","tokens":[{"end":79,"kind":"keyword","start":0,"text":"let"}]}
            let mut toc = it.params.iter_type_or_consts().map(from_toc_id(it));
        self.parent_generics().into_iter().flat_map(|it| {
            let trait_self_param = it.has_trait_self_param.then(|| toc.next()).flatten();