1  // SPDX-License-Identifier: GPL-2.0-or-later
 2  pragma solidity >=0.6.0;
 3  
 4  interface IERC20Permit {
 5  
 6      function permit(
 7          address owner, 
 8          address spender,
 9          uint256 value,
10          uint256 deadline,
11          uint8 v,
12          bytes32 r,
13          bytes32 s
14      ) external;
15  }