通过selfdestruct发送eth到不可接收合约

contract unpayable{
    
 function getBalance() public view returns (uint) {
        return address(this).balance;
    }
}
contract Attack{
   
    function attack(address to)external payable{
        selfdestruct(payable(to));
    }
     function getBalance() public view returns (uint) {
        return address(this).balance;
    }
}