code: @Override
      public FeatureResponseResult extractFeature(UploadSearchParams uploadSearchParams) {
          FeatureResponseResult result = searchOperations.extractFeature(uploadSearchParams);
          return result;
      }
docs: Extract feature string (encoded in base 64) given an image file or url.
  
  @param uploadSearchParams the upload search parameters, must contain a image file or a url
  @return the feature response string result