1  pragma solidity >=0.6.0;
 2  
 3  interface IGNSHedgingManagerFactory {
 4      function _referrer() external returns (address);
 5      function _gnsTradingAddr() external returns (address);
 6      function _gnsPairInfoAddr() external returns (address);
 7      function _gnsFarmTradingStorageAddr() external returns (address);
 8      function _daiAddr() external returns (address);
 9      function create(address _poolAddr) external returns (address);
10  }