| Class and Description | 
|---|
| GroupingSpecification
 Encapsulates the grouping options like fields group sort and more specified by clients. 
 | 
| Class and Description | 
|---|
| Command
 Defines a grouping command. 
 | 
| CommandHandler
 Responsible for executing a search with a number of  
Command instances. | 
| CommandHandler.Builder | 
| Class and Description | 
|---|
| Command
 Defines a grouping command. 
 | 
| Class and Description | 
|---|
| Command
 Defines a grouping command. 
 |