| Class | Description | 
|---|---|
| DefaultExternalTaskPriorityProvider | 
 Represents the default priority provider for external tasks. 
 | 
| ExternalTaskLogger | 
 Represents the logger for the external task. 
 | 
| ExternalTaskQueryTopicBuilderImpl | |
| LockedExternalTaskImpl | |
| TopicFetchInstruction | 
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