| Interface | Description | 
|---|---|
| ClusterLifecycleManager | A client for communicating with the Retrieve and Rank API. | 
| SolrConfigManager | Manages Solr Clusters configuration. | 
| Class | Description | 
|---|---|
| RetrieveAndRank | The IBM Watson Retrieve and Rank service helps users find the most relevant information for their query by using a
 combination of search and machine learning to find “signals” in the data. | 
Copyright © 2015–2016 IBM Watson. All rights reserved.