```\ninterface ISushiBar {\n    function enter(uint256 \_amount) external;\n\n    function leave(uint256 \_share) external;\n\n    function totalSupply() external view returns (uint256);\n\n    function balanceOf(address account) external view returns (uint256);\n\n    function transfer(address recipient, uint256 amount)\n        external\n        returns (bool);\n}\n```\n