interface INestPool {
    // 取出nest
    function drainNest(address to, uint amount, address gov) external;
    // 查询nest数量
    function getMinerNest(address miner) external view returns (uint nestAmount);
    // 设置管理员
    function setGovernance(address _gov) external;
}
// 3.5矿池合约
function drainNest(address to, uint amount, address gov) external;
// 取出nest