I'm using /rest/api/latest/issue/<id> to fetch json data from an epic-type issue. The epic has a issue connected to it, but it's not showing up anywhere in the json. If I use /rest/api/latest/issue/<id> to show data from the connected issue it tells me what epic it's in, but not the other way around. I'm I doing this the wrong way? Is there another api I can use to get all relevant data from an epic?