code: public Pager<Epic> getEpicIssues(Object groupIdOrPath, Integer epicIid, int itemsPerPage) throws GitLabApiException {
          return (new Pager<Epic>(this, Epic.class, itemsPerPage, null, "groups", getGroupIdOrPath(groupIdOrPath), "epics", epicIid, "issues"));
      }
docs: Get a Pager of all issues that are assigned to an epic and the authenticated user has access to.
  
  <pre><code>GitLab Endpoint: GET /groups/:id/epics/:epic_iid/issues</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 get issues for
  @param itemsPerPage the number of issues per page
  @return the Pager of all epic issues belonging to the specified epic
  @throws GitLabApiException if any exception occurs