{
    "Function": "_update",
    "File": "src/VirtualToken.sol",
    "Parent Contracts": [
        "lib/openzeppelin-contracts/contracts/access/Ownable.sol",
        "lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol",
        "lib/openzeppelin-contracts/contracts/interfaces/draft-IERC6093.sol",
        "lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol",
        "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol",
        "lib/openzeppelin-contracts/contracts/utils/Context.sol"
    ],
    "High-Level Calls": [],
    "Internal Calls": [
        "balanceOf",
        "revert DebtOverflow(address,uint256,uint256)",
        "_update"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function _update(address from, address to, uint256 value) internal override {\n        // check: balance - _debt < value\n        if (from != address(0) && balanceOf(from) < value + _debt[from]) {\n            revert DebtOverflow(from, _debt[from], value);\n        }\n\n        super._update(from, to, value);\n    }"
}