src/Message/PurchaseResponse.php
public function getMessage()
    {
        $response = [];

        if ($messages = $this->data->query('/Message/Body/Errors')->array()) {
            foreach ($messages as $message) {
                $response[] = $message->textContent;
            }
        }

        return count($response) ? implode(', ', $response) : null;
    }
public function getMessage()
    {
        $response = [];

        if ($messages = $this->data->query('/Message/Body/Errors')->array()) {
            foreach ($messages as $message) {
                $response[] = $message->textContent;
            }
        }

        return count($response) ? implode(', ', $response) : null;
    }
Text description of the status.

@return string|null