src/Queues/Adapters/IronMQ.php
public function clear($queue)
    {
        $this->client->request->post(
            $this->apiEndpoint.'/projects/'.$this->params['project'].'/queues/'.$queue.'/clear'
        );
    }
public function clear($queue)
    {
        $this->client->request->post(
            $this->apiEndpoint.'/projects/'.$this->params['project'].'/queues/'.$queue.'/clear'
        );
    }
Receives the name of a queue and clears it.

@param string $queue
@return void