Macro buttplug::create_buttplug_protocol

macro_rules! create_buttplug_protocol {
    (
        $protocol_name:tt,
        $create_protocol_creator_impl:tt,
        (
            $(
                ( $member_name:tt: $member_type:ty = $member_initial_value:expr )
            ),*
        ),
        (
            $(
                ( $message_name:tt, $message_handler_body:block )
            ),+
        )
    ) => { ... };
}