{
    "Function": "transferFrom",
    "File": "contracts/mocks/stETHMock.sol",
    "Parent Contracts": [
        "node_modules/@openzeppelin/contracts/token/ERC20/IERC20.sol"
    ],
    "High-Level Calls": [
        "SafeMath"
    ],
    "Internal Calls": [
        "_transfer",
        "require(bool,string)",
        "_approve"
    ],
    "Library Calls": [
        "sub"
    ],
    "Low-Level Calls": [],
    "Code": "function transferFrom(\n        address _sender,\n        address _recipient,\n        uint256 _amount\n    ) public returns (bool) {\n        uint256 currentAllowance = allowances[_sender][msg.sender];\n        require(\n            currentAllowance >= _amount,\n            \"TRANSFER_AMOUNT_EXCEEDS_ALLOWANCE\"\n        );\n\n        _transfer(_sender, _recipient, _amount);\n        _approve(_sender, msg.sender, currentAllowance.sub(_amount));\n        return true;\n    }"
}