code: public Request<Integer> getActiveUsersCount() {
          String url = baseUrl
                  .newBuilder()
                  .addPathSegments("api/v2/stats/active-users")
                  .build()
                  .toString();
  
          CustomRequest<Integer> request = new CustomRequest<>(client, url, "GET", new TypeReference<Integer>() {
          });
          request.addHeader("Authorization", "Bearer " + apiToken);
          return request;
      }
docs: Request the Active Users Count (logged in during the last 30 days). A token with scope read:stats is needed.
  See https://auth0.com/docs/api/management/v2#!/Stats/get_active_users
  
  @return a Request to execute.