code: public void deleteEpic(Object groupIdOrPath, Integer epicIid) throws GitLabApiException {
          delete(Response.Status.NO_CONTENT, null, "groups", getGroupIdOrPath(groupIdOrPath), "epics", epicIid);
      }
docs: Deletes an epic.
  
  <pre><code>GitLab Endpoint: DELETE /groups/:id/epics/:epic_iid</code></pre>
  
  @param groupIdOrPath the group ID, path of the group, or a Group instance holding the group ID or path
  @param epicIid the IID of the epic to delete
  @throws GitLabApiException if any exception occurs