```\ncontract SushiYieldSource is IYieldSource {\n    using SafeMath for uint256;\n    address public sushiBar;\n    address public sushiAddr;\n    mapping(address => uint256) public balances;\n\n    constructor(address \_sushiBar, address \_sushiAddr) public {\n        sushiBar = \_sushiBar;\n        sushiAddr = \_sushiAddr;\n    }\n```\n