    function transferWithAuthorization(
        address holder,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) public virtual returns (bool) {
        // ... other code

        address signer = ECDSA.recover(hash, v, r, s);
        if (signer != holder) revert InvalidSignature();

@>      _update(holder, spender, value);

        return true;
    }
    function forceTransfer(address from, address to, uint256 amount) external onlyRole(ADMIN) {
        adminSanity(from, to);
@>      _update(from, to, amount);
        emit ForcedTransfer(from, to, amount);
    }
    function transfer(address to, uint256 value) public virtual returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, value);
        return true;
    }

    // ...

    function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, value);
        _transfer(from, to, value);
        return true;
    }
function _transfer(address from, address to, uint256 value) internal {
    if (from == address(0)) {
        revert ERC20InvalidSender(address(0));
    }
    if (to == address(0)) {
        revert ERC20InvalidReceiver(address(0));
    }
    _update(from, to, value);
}
