docs: public ServiceCall<Classification> classify(ClassifyOptions classifyOptions) {
      Validator.notNull(classifyOptions, "classifyOptions cannot be null");
      String[] pathSegments = { "v1/classifiers", "classify" };
      String[] pathParameters = { classifyOptions.classifierId() };
      RequestBuilder builder = RequestBuilder.post(RequestBuilder.constructHttpUrl(getEndPoint(), pathSegments,
          pathParameters));
      Map<String, String> sdkHeaders = SdkCommon.getSdkHeaders("natural_language_classifier", "v1", "classify");
      for (Entry<String, String> header : sdkHeaders.entrySet()) {
        builder.header(header.getKey(), header.getValue());
      }
      builder.header("Accept", "application/json");
      final JsonObject contentJson = new JsonObject();
      contentJson.addProperty("text", classifyOptions.text());
      builder.bodyJson(contentJson);
      return createServiceCall(builder.build(), ResponseConverterUtils.getObject(Classification.class));
    }