Version returns the version information for the application.

Planning indicates that the trigger is in planning state and not active.

Schedule indicates that the trigger is in active state for podset planner.

SchedulePlanReconciler reconciles a SchedulePlan object.

ScheduleTriggerReconciler reconciles a ScheduleTrigger object.

VersionSpec defines the version information for the application.

ScheduleTriggerCallback is registered and invoked on updates.