| Interface | Description | 
|---|---|
| ITaskHook | |
| IWorkerHook | 
 An IWorkerHook represents a topology component that can be executed when a worker starts, and when a worker shuts down. 
 | 
| Class | Description | 
|---|---|
| BaseTaskHook | |
| BaseWorkerHook | 
 A BaseWorkerHook is a noop implementation of IWorkerHook. 
 | 
| Exception | Description | 
|---|---|
| SubmitterHookException | 
 This Exception is thrown when registered  
ISubmitterHook could not be initialized or invoked. | 
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