contract MethuselonMessage001 {

    address public immutable methuselon;
    string public messageFromFuture;
    
    /**
     * @dev Dogelon deploys the contract on behalf of Methuselon.
     */
    constructor(address methuselah) {
        methuselon = methuselah;
    }
    
    /**
     * @dev Receive a message from the future.
     * @param message message to store.
     */
    function receiveMessageFromFuture(string memory message) public {
        require(methuselon == msg.sender, "not methuselon");
        messageFromFuture = message;
    }
}
/**
 * @title MethuselonMessage001
 * @dev Store a message sent by Methuselon from the future.
 */
function receiveMessageFromFuture(string memory message) public {
    require(methuselon == msg.sender, "not methuselon");
    messageFromFuture = message;
}

/**
 * @dev Receive a message from the future.
 * @param message message to store.
 */