code: public Extractor getExtractor() {
      try {
        this.rawSourceExtractor = getSource().getExtractor(this.taskState);
        boolean throttlingEnabled = this.taskState.getPropAsBoolean(ConfigurationKeys.EXTRACT_LIMIT_ENABLED_KEY,
            ConfigurationKeys.DEFAULT_EXTRACT_LIMIT_ENABLED);
        if (throttlingEnabled) {
          Limiter limiter = DefaultLimiterFactory.newLimiter(this.taskState);
          if (!(limiter instanceof NonRefillableLimiter)) {
            throw new IllegalArgumentException("The Limiter used with an Extractor should be an instance of "
                + NonRefillableLimiter.class.getSimpleName());
          }
          return new LimitingExtractorDecorator<>(this.rawSourceExtractor, limiter, this.taskState);
        }
        return this.rawSourceExtractor;
      } catch (IOException ioe) {
        throw new RuntimeException(ioe);
      }
    }
docs: Get a {@link Extractor} instance.
  
  @return a {@link Extractor} instance