```\\nfunction transferFrom(\\n    address sender,\\n    address recipient,\\n    uint amount\\n) external override returns (bool) {\\n    if (allowance[sender][msg.sender] != type(uint).max) {\\n        require(allowance[sender][msg.sender] >= amount, "VoxNET: insufficient allowance");\\n        allowance[sender][msg.sender] = allowance[sender][msg.sender] - amount;\\n    }\\n\\n    return doTransfer(sender, recipient, amount);\\n}\\n```\\n