// contracts/MyContract.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

​

import "@openzeppelin/contracts/access/Ownable.sol";

​

contract MyContract is Ownable {

    function normalThing() public {

        // anyone can call this normalThing()

    }

​

    function specialThing() public onlyOwner {

        // only the owner can call specialThing()!

    }

}