Implements Drupal\Core\KeyValueStore\KeyValueStoreInterface::deleteMultiple().
Overrides KeyValueStoreInterface::deleteMultiple
public function deleteMultiple(array $keys) {
// Delete in chunks when a large array is passed.
do {
$this->connection
->delete($this->table)
->condition('name', array_splice($keys, 0, 1000))
->condition('collection', $this->collection)
->execute();
} while (count($keys));
}