docs: public List<MergeRequest> getGroupMergeRequest(Object groupIdOrPath, Integer milestoneId) throws GitLabApiException {
          Response response = get(Response.Status.OK, getDefaultPerPageParam(),
                  "groups", getGroupIdOrPath(groupIdOrPath), "milestones", milestoneId, "merge_requests");
          return (response.readEntity(new GenericType<List<MergeRequest>>() {}));
      }