public class TopicConfig {
    @Deprecated
    public static final String MESSAGE_FORMAT_VERSION_DOC = "[DEPRECATED] Specify the message format version the broker " +
        "will use to append messages to the logs. The value of this config is always assumed to be `3.0` if " +
        "`inter.broker.protocol.version` is 3.0 or higher (the actual config value is ignored). Otherwise, the value should " +
        "be a valid ApiVersion. Some examples are: 0.10.0, 1.1, 2.8, 3.0. By setting a particular message format version, the " +
        "user is certifying that all the existing messages on disk are smaller or equal than the specified version. Setting " +
        "this value incorrectly will cause consumers with older versions to break as they will receive messages with a format " +
        "that they don't understand.";
}