    constructor(
        string memory contractName,
        string memory contractSymbol
    ) initializer
    {
        AccessControlEnumerableUpgradeable.__AccessControlEnumerable_init();
        ERC20Upgradeable.__ERC20_init(contractName, contractSymbol);
        ERC20BurnableUpgradeable.__ERC20Burnable_init();
        _setRoleAdmin(MINTER_ROLE, MINTER_ROLE);
        _setupRole(MINTER_ROLE, _msgSender());
    }
    function addERC20TokenByOwner(
        string calldata targetChainName,
        address erc20OnMainChain,
        address erc20OnSchain
     )
    function depositERC20(
        string calldata schainName,
        address erc20OnMainnet,
        uint256 amount
    )
    function mint(address account, uint256 value) external override {
        require(hasRole(MINTER_ROLE, _msgSender()), "Sender is not a Minter");
        _mint(account, value);
    }
    function exitToMainERC20(
        address contractOnMainnet,
        uint256 amount
    )
        external
        override
    {
        communityLocker.checkAllowedToSendMessage(msg.sender);
        _exit(MAINNET_HASH, depositBox, contractOnMainnet, msg.sender, amount);
    }
