{
    "Function": "transferFrom",
    "File": "contracts/WrappedIbbtcEth.sol",
    "Parent Contracts": [
        "deps/@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol",
        "deps/@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol",
        "deps/@openzeppelin/contracts-upgradeable/GSN/ContextUpgradeable.sol",
        "deps/@openzeppelin/contracts-upgradeable/proxy/Initializable.sol"
    ],
    "High-Level Calls": [
        "SafeMathUpgradeable"
    ],
    "Internal Calls": [
        "_msgSender",
        "balanceToShares",
        "_approve",
        "_transfer",
        "_msgSender"
    ],
    "Library Calls": [
        "sub"
    ],
    "Low-Level Calls": [],
    "Code": "function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {\n        /// The _balances mapping represents the underlying ibBTC shares (\"non-rebased balances\")\n        /// Some naming confusion emerges due to maintaining original ERC20 var names\n\n        uint256 amountInShares = balanceToShares(amount);\n\n        _transfer(sender, recipient, amountInShares);\n        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amountInShares, \"ERC20: transfer amount exceeds allowance\"));\n        return true;\n    }"
}