Pantheon\Terminus\Models\Workflow::wait PHP Method

    public function wait()
    {
        while (!$this->isFinished()) {
            $this->fetch();
            sleep(3);
            /**
             * TODO: Output this to stdout so that it doesn't get mixed with any
             *   actual output. We can't use the logger here because that might be
             *   redirected to a log file where each line is timestamped.
             */
            fwrite(STDERR, '.');
        }
        echo "\n";
        if ($this->isSuccessful()) {
            return $this;
        } else {
            $final_task = $this->get('final_task');
            if ($final_task != null && !empty($final_task->messages)) {
                foreach ($final_task->messages as $data => $message) {
                    if (!is_string($message->message)) {
                        $message->message = print_r($message->message, true);
                    }
                    throw new TerminusException((string) $message->message);
                }
            }
        }
    }