```\\nfunction tryRecover(\\n    bytes32 hash,\\n    bytes32 r,\\n    bytes32 vs\\n) internal pure returns (address, RecoverError) {\\n    bytes32 s = vs &\\n        bytes32(\\n            0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff\\n        );\\n    uint8 v = uint8((uint256(vs) >> 255) + 27);\\n    return tryRecover(hash, v, r, s);\\n}\\n```\\n