function revokePersistent(address) external;
function revokePersistent(address[] calldata) external;

contract SimpleStorageContract {
    string public value;
 
    function set(uint256 _value) public {
        value = _value;
    }
}
 
function testRevokePersistent() public {
    // select a specific fork
    cheats.selectFork(mainnetFork);
 
    // create a new contract that's stored in the `mainnetFork` storage
    SimpleStorageContract simple = new SimpleStorageContract();
 
    // `simple` is not marked as persistent
    assert(!cheats.isPersistent(address(simple)));
 
    // make it persistent
    cheats.makePersistent(address(simple));
 
    // ensure it is persistent
    assert(cheats.isPersistent(address(simple)));
 
    // revoke it
    cheats.revokePersistent(address(simple));
 
    // contract no longer persistent
    assert(!cheats.isPersistent(address(simple)));
}