{"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"let"}]}
        let num_activities = x.input_activity.len() + if x.has_ret_activity() { 1 } else { 0 };
        let sig_args = sig.decl.inputs.len() + if has_ret { 1 } else { 0 };
        if sig_args != num_activities {