Governor.sol:
57:    function initialize(
         ...
76:        settings.vetoer = _vetoer;
596:    function updateVetoer(address _newVetoer) external onlyOwner {
597:        if (_newVetoer == address(0)) revert ADDRESS_ZERO();
599:        emit VetoerUpdated(settings.vetoer, _newVetoer);
601:        settings.vetoer = _newVetoer;
602:    }
