ConfigOverriderLowPriority.php

<?php

namespace Drupal\config_override_test;

use Drupal\Core\Cache\CacheableMetadata;
use Drupal\Core\Config\ConfigFactoryOverrideInterface;
use Drupal\Core\Config\StorageInterface;

/**
 * Tests module overrides for configuration.
 */
class ConfigOverriderLowPriority implements ConfigFactoryOverrideInterface {
    
    /**
     * {@inheritdoc}
     */
    public function loadOverrides($names) {
        $overrides = [];
        if (!empty($GLOBALS['config_test_run_module_overrides'])) {
            if (in_array('system.site', $names)) {
                $overrides = [
                    'system.site' => [
                        'name' => 'Should not apply because of higher priority listener',
                        // This override should apply because it is not overridden by the
                        // higher priority listener.
'slogan' => 'Yay for overrides!',
                    ],
                ];
            }
        }
        return $overrides;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCacheSuffix() {
        return 'ConfigOverriderLowPriority';
    }
    
    /**
     * {@inheritdoc}
     */
    public function createConfigObject($name, $collection = StorageInterface::DEFAULT_COLLECTION) {
        return NULL;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCacheableMetadata($name) {
        return new CacheableMetadata();
    }

}