File Content: async-operation-queue.php <?php namespace ImageOptimization\Classes\Async_Operation; use ImageOptimization\Classes\Basic_Enum; if ( ! defined( 'ABSPATH' ) ) { exit; // Exit if accessed directly. } final class Async_Operation_Queue extends Basic_Enum { public const OPTIMIZE = 'image-optimization/optimize'; public const BACKUP = 'image-optimization/backup'; public const RESTORE = 'image-optimization/restore'; public const STATS = 'image-optimization/stats'; public const MIGRATION = 'image-optimization/migration'; public const CLEANUP = 'image-optimization/cleanup'; } Submit