function initialize(address admin, address factory) external initializer {
    _setFactory(factory);
    __Ownable_init_unchained(admin);

    IKatanaV2Pair pair;
    uint40 until = AUTHORIZED;
    bool[] memory statusesPlaceHolder;
    address[] memory allowedPlaceHolder;
    uint256 length = IKatanaV2Factory(factory).allPairsLength();

    for (uint256 i; i < length; ++i) {
      pair = IKatanaV2Pair(IKatanaV2Factory(factory).allPairs(i));
      _setPermission(pair.token0(), until, allowedPlaceHolder, statusesPlaceHolder);
      _setPermission(pair.token1(), until, allowedPlaceHolder, statusesPlaceHolder);
    }
}
uint256 public lastInitializedIndex;
bool public initializationComplete;

function initialize(address admin, address factory) external initializer {
    _setFactory(factory);
    __Ownable_init_unchained(admin);
    lastInitializedIndex = 0;
    initializationComplete = false;
}

function continueInitialization(uint256 batchSize) external onlyOwner {
    require(!initializationComplete, "Already initialized");
    uint256 length = IKatanaV2Factory(factory).allPairsLength();
    uint256 endIndex = Math.min(lastInitializedIndex + batchSize, length);
    
    for (uint256 i = lastInitializedIndex; i < endIndex; ++i) {
        IKatanaV2Pair pair = IKatanaV2Pair(IKatanaV2Factory(factory).allPairs(i));
        _setPermission(pair.token0(), until, allowedPlaceHolder, statusesPlaceHolder);
        _setPermission(pair.token1(), until, allowedPlaceHolder, statusesPlaceHolder);
    }
    
    lastInitializedIndex = endIndex;
    if (lastInitializedIndex == length) {
        initializationComplete = true;
    }
}
