function totalSupply() external view returns (uint256);

function balanceOf(address account) external view returns (uint256);

function transfer(address recipient, uint256 amount) external returns (bool);

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

function approve(address spender, uint256 amount) external returns (bool);

function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

function deposit(address to, uint256 amount) external returns (bool);

function burn(uint256 amount) external returns (bool);

function withdraw(bytes memory to, uint256 amount) external returns (bool);

function withdrawGasFee() external view returns (address, uint256);

function withdrawGasFeeWithGasLimit(uint256 gasLimit) external view returns (address, uint256);

function PROTOCOL_FLAT_FEE() external view returns (uint256);

function GAS_LIMIT() external view returns (uint256);

function setName(string memory newName) external;

function setSymbol(string memory newSymbol) external;