View file File name : TaskQueueInterface.php Content :<?php declare (strict_types=1); namespace YoastSEO_Vendor\GuzzleHttp\Promise; interface TaskQueueInterface { /** * Returns true if the queue is empty. */ public function isEmpty() : bool; /** * Adds a task to the queue that will be executed the next time run is * called. */ public function add(callable $task) : void; /** * Execute all of the pending task in the queue. */ public function run() : void; }