    function uniswapV3MintCallback(uint256 amount0, uint256 amount1, bytes calldata) external override {
        // Only the uniswap pool has access to this function.
        require(allowedUniswapPools[msg.sender]);

        IUniswapV3Pool uniswapPool = IUniswapV3Pool(msg.sender);

        if (amount0 > 0) {
            ERC20(uniswapPool.token0()).safeTransfer(msg.sender, amount0);
        }
        if (amount1 > 0) {
            ERC20(uniswapPool.token1()).safeTransfer(msg.sender, amount1);
        }
    }
    mapping(address => bool) public allowedUniswapPools;
        if (amount0 > 0) {
            ERC20(uniswapPool.token0()).safeTransfer(msg.sender, amount0);
        }
        if (amount1 > 0) {
            ERC20(uniswapPool.token1()).safeTransfer(msg.sender, amount1);
        }
