function Discourse_Topic_Integration()
{
    $instance = Discourse_Topic_Integration::instance(__FILE__, '0.4');
    if (is_null($instance->settings)) {
        $instance->settings = Discourse_Topic_Integration_Settings::instance($instance);
    }
    return $instance;
}
 /**
  * Main Discourse_Topic_Integration Instance
  *
  * Ensures only one instance of Discourse_Topic_Integration is loaded or can be loaded.
  *
  * @since 1.0.0
  * @static
  * @see Discourse_Topic_Integration()
  * @return Main Discourse_Topic_Integration instance
  */
 public static function instance($file = '', $version = '1.0.0')
 {
     if (is_null(self::$_instance)) {
         self::$_instance = new self($file, $version);
     }
     return self::$_instance;
 }