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Description

Consider using Solidity v0.8.

Also, note ChainSafe#476 and the Solidity v0.8.0 Breaking Changes.

References:

• OpenZeppelin/openzeppelin-contracts#2442

Description

Consider importing ChainBridge contracts and using inheritance such that we can manage and focus on only our own logics (like how ChainBridge contracts uses OpenZeppelin contracts).

pragma solidity 0.8.11;

import "../chainbridge/handlers/ERC721Handler.sol";

contract ERC721RollupHandler is ERC721Handler {
(...)

Also, this approach reduces the workload to close #16