def update(topic_metadata_response)
      update_brokers(topic_metadata_response.brokers)
      update_topics(topic_metadata_response.topics)

      @last_refreshed_at = Time.now
      nil
    end
def update(topic_metadata_response)
      update_brokers(topic_metadata_response.brokers)
      update_topics(topic_metadata_response.topics)

      @last_refreshed_at = Time.now
      nil
    end
Update what we know about the cluter based on MetadataResponse

 @param [MetadataResponse] topic_metadata_response
 @return nil