How come the Get Issues for board JIRA REST API endpoint does not give me Epics?

[Kevin Wang]

I'm trying to get all the issues for a Scrum board using this endpoint:

https://docs.atlassian.com/jira-software/REST/7.1.5/#agile/1.0/board-getIssuesForBoard

However, it doesn't appear to return Epics. I can get Capabilities, Stories, Bugs, Subtasks, etc but no Epics. Why is that?