{"ast_node_type":"variable","tokens":[{"end":87,"kind":"keyword","start":0,"text":"let"}]}
        let docs = item.attrs.iter().filter_map(|at| at.doc_str()).collect::<Vec<_>>();
        let item = parse_item_from_source_str(name_2, source, &psess).unwrap().unwrap();
        let b: &[_] = &[Symbol::intern(" doc comment"), Symbol::intern(" line 2")];