code: public Request<GuardianTemplates> getTemplates() {
          String url = baseUrl
                  .newBuilder()
                  .addPathSegments("api/v2/guardian/factors/sms/templates")
                  .build()
                  .toString();
          CustomRequest<GuardianTemplates> request = new CustomRequest<>(client, url, "GET", new TypeReference<GuardianTemplates>() {
          });
          request.addHeader("Authorization", "Bearer " + apiToken);
          return request;
      }
docs: Request the Guardian SMS enrollment and verification templates.
  A token with scope read:guardian_factors is needed.
  
  @return a Request to execute.
  @see <a href="https://auth0.com/docs/api/management/v2#!/Guardian/get_templates">Management API2 docs</a>