{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"sig.decl.inputs.iter().map(|t|"}]}
        sig.decl.inputs.iter().map(|t| t.span).chain(iter::once(sig.decl.output.span()))
        let (sig, _) = tcx.hir_expect_trait_item(def_id).expect_fn();
    });