public function __construct(array $configuration, $plugin_id, $plugin_definition, ModuleHandlerInterface $module_handler)
 {
     parent::__construct($configuration, $plugin_id, $plugin_definition);
     $this->moduleHandler = $module_handler;
 }
 public function __construct(array $configuration, $plugin_id, $plugin_definition)
 {
     parent::__construct($configuration, $plugin_id, $plugin_definition);
     $this->fs = new Filesystem();
 }