class ConfigOverrider

class ConfigOverrider implements ConfigFactoryOverrideInterface {
    
    /**
     * {@inheritdoc}
     */
    public function loadOverrides($names) {
        $overrides = [];
        if (in_array('block.block.overridden_block', $names)) {
            if (\Drupal::state()->get('settings_tray_override_test.block')) {
                $overrides = $overrides + [
                    'block.block.overridden_block' => [
                        'settings' => [
                            'label' => 'Now this will be the label.',
                        ],
                    ],
                ];
            }
        }
        if (in_array('system.site', $names)) {
            if (\Drupal::state()->get('settings_tray_override_test.site_name')) {
                $overrides = $overrides + [
                    'system.site' => [
                        'name' => 'Llama Fan Club',
                    ],
                ];
            }
        }
        if (in_array('system.menu.main', $names)) {
            if (\Drupal::state()->get('settings_tray_override_test.menu')) {
                $overrides = $overrides + [
                    'system.menu.main' => [
                        'label' => 'Foo label',
                    ],
                ];
            }
        }
        return $overrides;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCacheSuffix() {
        return 'ConfigOverrider';
    }
    
    /**
     * {@inheritdoc}
     */
    public function createConfigObject($name, $collection = StorageInterface::DEFAULT_COLLECTION) {
        return NULL;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getCacheableMetadata($name) {
        return new CacheableMetadata();
    }

}