// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity ^0.8.4; import {IERC20} from '@openzeppelin/contracts/token/ERC20/IERC20.sol'; /// @title Interface for WETH9 interface IWETH9 is IERC20 { /// @notice Deposit ether to get wrapped ether function deposit() external payable; /// @notice Withdraw wrapped ether to get ether function withdraw(uint256) external; }