MessageGroupSet (ActiveMQ 5.17.0 API)

All Known Implementing Classes:

EmptyMessageGroupSet, SimpleMessageGroupSet
```
public interface MessageGroupSet
```
Represents a set of Message Group IDs

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  boolean contains(String groupID)

- Method Detail
  - contains
```
boolean contains(String groupID)
```