function allowance(address owner, address spender) view returns (uint256)

function balanceOf(address account) view returns (uint256)

function bond() view returns (address)

function decimals() view returns (uint8)

function name() view returns (string)

function symbol() view returns (string)

function totalSupply() view returns (uint256)

function approve(address spender, uint256 value) returns (bool)

function burnByBond(address account, uint256 amount)

function init(string name_, string symbol_)

function mintByBond(address to, uint256 amount)

function transfer(address to, uint256 value) returns (bool)

function transferFrom(address from, address to, uint256 value) returns (bool)

event Approval(address indexed owner, address indexed spender, uint256 value)

event Transfer(address indexed from, address indexed to, uint256 value)

error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed)

error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed)

error ERC20InvalidApprover(address approver)

error ERC20InvalidReceiver(address receiver)

error ERC20InvalidSender(address sender)

error ERC20InvalidSpender(address spender)

error MCV2_Token__AlreadyInitialized()

error MCV2_Token__PermissionDenied()