__}
    @ivar ednsVersion: See L{__init__}
    @ivar dnssecOK: See L{__init__}
    @ivar authenticData: See L{__init__}
    @ivar checkingDisabled: See L{__init__}
    @ivar maxSize: See L{__init__}

    @ivar queries: See L{__init__}
    @ivar answers: See L{__init__}
    @ivar authority: See L{__init__}
    @ivar additional: See L{__init__}

    @ivar _messageFactory: A constructor of L{Message} instances. Called by
        C{_toMessage} and C{_fromMessage}.
    ©