/**
  * @param FilesystemInterface $outerFileSystem
  * @param FilesystemInterface $innerFileSystem
  */
 public static function register(FilesystemInterface $outerFileSystem, $innerFileSystem)
 {
     Expect::that($innerFileSystem)->isInstanceOf(FilesystemInterface::class);
     parent::register($outerFileSystem, $innerFileSystem);
 }
 /**
  * @param FilesystemInterface $outerFileSystem
  * @param string $pathToDatabase
  */
 public static function register(FilesystemInterface $outerFileSystem, $pathToDatabase)
 {
     Expect::that($pathToDatabase)->isString();
     parent::register($outerFileSystem, $pathToDatabase);
 }