```
@Documented
@Retention(RUNTIME)
@Target({METHOD,PARAMETER,FIELD})
@Qualifier
public @interface JoynrMqttClientIdProvider
```
Used to specify an optional mqtt client id provider
A mqtt client id provider is used to create an id which identifies the mqtt client.
Note that if the EJB which contains the producer methods implements an interface, then the producer methods also need to be declared in that interface, otherwise CDI won't recognize the method implementations as producers.

Annotation Type JoynrMqttClientIdProvider