/**
* Constructs the Configuration Sync storage comparer.
*
* @param \Drupal\Core\Config\StorageInterface $source_storage
* Storage object used to read configuration.
* @param \Drupal\Core\Config\StorageInterface $target_storage
* Storage object used to write configuration.
* @param \Drupal\Core\Config\ConfigManagerInterface $config_manager
* The configuration manager.
* @param \Drupal\config_update\ConfigDiffInterface $config_diff
* The config differ.
*/
public function __construct(StorageInterface $source_storage, StorageInterface $target_storage, ConfigManagerInterface $config_manager, ConfigDiffInterface $config_diff)
{
parent::__construct($source_storage, $target_storage, $config_manager);
$this->configDiff = $config_diff;
}