{"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"fn_sig.is_some_and(|fn_sig|"}]}
            fn_sig.is_some_and(|fn_sig| {
        let is_used_in_input = |def_id| {
                fn_sig.decl.inputs.iter().any(|ty| match ty.kind {