{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"//"}]}
            // In the case that we're recovering `fn() -> W<_>` or some other return
        let fn_sig = if decl.output.is_suggestable_infer_ty().is_some() {
            // type that has an infer in it, lower the type directly so that it'll