docs: public EpicIssue removeIssue(Object groupIdOrPath, Integer epicIid, Integer issueIid) throws GitLabApiException {
          Response response = delete(Response.Status.OK, null,
                  "groups", getGroupIdOrPath(groupIdOrPath), "epics", epicIid, "issues", issueIid);
          return (response.readEntity(EpicIssue.class));
      }