public function actionList($showAllVersions = false)
    {
        foreach ($this->apis as $id => $versions) {
            foreach ($versions as $version => $api) {
                if (!$showAllVersions) {
                    $this->stdout($api->name . ' - ' . $api->title . "\n");
                    break;
                } else {
                    $this->stdout($api->id . ' - ' . $api->title . "\n");
                }
            }
        }
    }