code: public ServiceFuture<DetectedLanguage> detectLanguageAsync(String textContentType, byte[] textContent, final ServiceCallback<DetectedLanguage> serviceCallback) {
          return ServiceFuture.fromResponse(detectLanguageWithServiceResponseAsync(textContentType, textContent), serviceCallback);
      }
docs: This operation will detect the language of given input content. Returns the &lt;a href="http://www-01.sil.org/iso639-3/codes.asp"&gt;ISO 639-3 code&lt;/a&gt; for the predominant language comprising the submitted text. Over 110 languages supported.
  
  @param textContentType The content type. Possible values include: 'text/plain', 'text/html', 'text/xml', 'text/markdown'
  @param textContent Content to screen.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object