| Interface | Description |
|---|---|
| FailureResult | Describes how an operation finished with failures. |
| FinishEvent | An event that informs about an operation having finished its execution. |
| OperationDescriptor | Describes an operation for which an event has occurred. |
| OperationResult | Describes the result of running an operation. |
| ProgressEvent | Root interface for all events that signal progress while executing an operation. |
| SkippedResult | Describes how an operation was skipped. |
| StartEvent | An event that informs about an operation having started its execution. |
| SuccessResult | Describes how an operation finished successfully. |