docs: public List<Epic> getEpicIssues(Object groupIdOrPath, Integer epicIid, int page, int perPage) throws GitLabApiException {
          Response response = get(Response.Status.OK, getPageQueryParams(page, perPage), "groups", getGroupIdOrPath(groupIdOrPath), "epics", epicIid, "issues");
          return (response.readEntity(new GenericType<List<Epic>>() { }));
      }