workersNumber := e.DeleteCollectionWorkers
	if workersNumber < 1 {
		workersNumber = 1
	}
	wg := sync.WaitGroup{}
	// Ensure that chanSize is not too high (to avoid wasted work) but
	// at the same time high enough to start listing before we process
	// the whole page.
	chanSize := 2 * workersNumber
	if chanSize < 256 {
		chanSize = 256
	}