Flarum\Extension\Extension::getId PHP Method

    public function getId()
    {
        return $this->id;
    }

 /**
  * Get the path to an extension's published asset.
  *
  * @param Extension $extension
  * @param string    $path
  * @return string
  */
 public function getAsset(Extension $extension, $path)
 {
     return $this->app->basePath() . '/assets/extensions/' . $extension->getId() . $path;
 }