{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"assert_eq!(expected_input_tys.len(),"}]}
            assert_eq!(expected_input_tys.len(), formal_input_tys.len());
        let expected_input_tys = if let Some(expected_input_tys) = expected_input_tys {
            expected_input_tys