Method ExecuteBatchByStrategy(EavSaveStrategy, List<IRedbObject>, List<RedbValue>)
Executes batch save by strategy. OpenSource: only DeleteInsert.
Pro: override to support ChangeTracking.
protected virtual Task ExecuteBatchByStrategy(EavSaveStrategy strategy, List<IRedbObject> allObjectsToSave, List<RedbValue> allValuesToSave)