From __init__.py:

Variable	BackfillRequest	Undocumented
Variable	CalendarSpec	Undocumented
Variable	IntervalSpec	Undocumented
Variable	Range	Undocumented
Variable	Schedule	Undocumented
Variable	ScheduleAction	Undocumented
Variable	ScheduleActionResult	Undocumented
Variable	ScheduleInfo	Undocumented
Variable	ScheduleListEntry	Undocumented
Variable	ScheduleListInfo	Undocumented
Variable	SchedulePatch	Undocumented
Variable	SchedulePolicies	Undocumented
Variable	ScheduleSpec	Undocumented
Variable	ScheduleState	Undocumented
Variable	StructuredCalendarSpec	Undocumented
Variable	TriggerImmediatelyRequest	Undocumented