{
    "Function": "_transferFromCaller",
    "File": "src/AddressDriver.sol",
    "Parent Contracts": [
        "lib/openzeppelin-contracts/contracts/metatx/ERC2771Context.sol",
        "lib/openzeppelin-contracts/contracts/utils/Context.sol",
        "src/Managed.sol",
        "lib/openzeppelin-contracts/contracts/proxy/utils/UUPSUpgradeable.sol",
        "lib/openzeppelin-contracts/contracts/proxy/ERC1967/ERC1967Upgrade.sol",
        "lib/openzeppelin-contracts/contracts/interfaces/draft-IERC1822.sol"
    ],
    "High-Level Calls": [
        "IERC20",
        "SafeERC20",
        "SafeERC20"
    ],
    "Internal Calls": [
        "_msgSender"
    ],
    "Library Calls": [
        "safeApprove",
        "safeTransferFrom"
    ],
    "Low-Level Calls": [],
    "Code": "function _transferFromCaller(IERC20 erc20, uint128 amt) internal {\n        erc20.safeTransferFrom(_msgSender(), address(this), amt);\n        // Approval is done only on the first usage of the ERC-20 token in DripsHub by the driver\n        if (erc20.allowance(address(this), address(dripsHub)) == 0) {\n            erc20.safeApprove(address(dripsHub), type(uint256).max);\n        }\n    }"
}