{"ast_node_type":"variable","tokens":[{"end":70,"kind":"keyword","start":0,"text":"if"}]}
                if let ItemKind::Fn(box Fn { sig, .. }) = &item.kind {
            | ItemKind::TraitAlias(_, generics, _) => {
                    self.collect_fn_info(sig.header, &sig.decl, item.id, &item.attrs);