code: @Override
    public void init(PlayerConfig config) throws InitializationFailedException {
      super.init(config);
      solrUrl = config.get(SOLR_URL_KEY);
      if (solrUrl == null || "".equals(solrUrl.trim())) {
        throw new IllegalArgumentException(this.getClass().getName() + " expects configuration property " + SOLR_URL_KEY);
      }
    }
docs: (non-Javadoc)
  
  @see com.sematext.ag.sink.Sink#init(com.sematext.ag.PlayerConfig)