NOTE - Some code has been slightly altered to work with newer versions of solidity and enable us to test the level with foundry. Any where this has been done an accompanying comment gives context for why this change was made.
Original Level
https://ethernaut.openzeppelin.com/level/0x97E982a15FbB1C28F6B8ee971BEc15C78b3d263F
forge test --match-contract PreservationTest -vvvv