/**
  * Constructor function.
  * @param string $file __FILE__ of the main plugin
  * @access  private
  * @since   1.0.0
  */
 private function __construct($file)
 {
     self::$token = 'pootle-pb-portfolio';
     self::$file = plugin_dir_path($file);
     self::$url = plugin_dir_url($file);
     self::$path = plugin_dir_path($file);
     self::$version = '1.0.0';
     add_action('init', array($this, 'init'));
 }