Any contract that calls IUniswapV3PoolActions#flash must implement this interface
function uniswapV3FlashCallback( uint256 fee0, uint256 fee1, bytes data ) external
msg.sender after transferring to the recipient from IUniswapV3Pool#flash.
In the implementation you must repay the pool the tokens sent by flash plus the computed fee amounts. The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory.
|uint256||The fee amount in token0 due to the pool by the end of the flash|
|uint256||The fee amount in token1 due to the pool by the end of the flash|
|bytes||Any data passed through by the caller via the IUniswapV3PoolActions#flash call|