// SPDX-License-Identifier: LGPL-3.0-or-later pragma solidity ^0.7.1; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; contract MockCoin is ERC20 { constructor () ERC20("Mock", "MCK") { } function mint(address account, uint256 amount) public returns (bool) { _mint(account, amount); return true; } }