/**
  * Check if a path is valid MS-windows or UNIX path
  * @since 0.2.0
  * @param  string $path the path
  * @return boolean true | false
  */
 public static function valid_path($path)
 {
     return MUCD_Functions::valid_unix_dir_path($path) || MUCD_Functions::valid_windows_dir_path($path);
 }