| Class | TimedEventFailureLog | Undocumented |
| Class | TimedEvent | No class docstring; 3/4 methods documented |
| Class | SchedulerMixin | No class docstring; 2/9 methods documented |
| Class | Scheduler | Track and execute persistent timed events for a site store. |
| Function | upgradeParentHook1to2 | Add the scheduler attribute to the given _SubSchedulerParentHook.
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| Class | SubScheduler | Track and execute persistent timed events for a substore. |
_SubSchedulerParentHook.