```\\nfunction transferFrom(\\n    address sender,\\n    address recipient,\\n    uint256 amount\\n) public override returns (bool) {\\n    _transfer(sender, recipient, amount);\\n    _approve(\\n        sender,\\n        _msgSender(),\\n        _allowances[sender][_msgSender()].sub(\\n            amount,\\n            "ERC20: transfer amount exceeds allowance"\\n        )\\n    );\\n    return true;\\n}\\n```\\n