Edit File: TaskQueueInterface.php
<?php declare(strict_types=1); namespace 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; }
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