Someone else in this thread links to sources but it looks like in civil cases things can be subponead in a similar way to the criminal system. Edit: Found it,

Someone else in this thread links to sources but it looks like in civil cases things can be subponead in a similar way to the criminal system. Edit: Found it, https://news.ycombinator.com/item?id=14046529 https://news.ycombinator.com/item?id=14046529