AlreadyInstalledException::__construct

public AlreadyInstalledException::__construct(TranslationInterface $string_translation)

public function __construct(TranslationInterface $string_translation) {
  $this->stringTranslation = $string_translation;

  $title = $this->t('Drupal already installed');
  $message = $this->t('<ul>
<li>To start over, you must empty your existing database and copy <em>default.settings.php</em> over <em>settings.php</em>.</li>
<li>To upgrade an existing installation, proceed to the <a href=":update-url">update script</a>.</li>
<li>View your <a href=":base-url">existing site</a>.</li>
</ul>', array(
    ':base-url' => $GLOBALS['base_url'],
    ':update-url' => $GLOBALS['base_path'] . 'update.php',
  ));
  parent::__construct($message, $title);
}