The link text for the anchor tag as a translated string or render array.
Strings will be sanitized automatically. If you need to output HTML in the link text, use a render array or an already sanitized string such as the output of \Drupal\Component\Utility\Xss::filter() or \Drupal\Component\Render\FormattableMarkup.
Type: string|array|\Drupal\Component\Render\MarkupInterface
protected $text;