{"ast_node_type":"other","tokens":[{"end":10,"kind":"keyword","start":0,"text":"};"}]}
        };
            _ => unreachable!("{from_ty:?} -> {to_ty:?}"),
        fx.lib_call(name, vec![AbiParam::new(from_ty)], vec![AbiParam::new(to_ty)], &[from])[0]