Not persistent right now... only used for unit tests
Наследование: SimpleStorage
 public void TearDown()
 {
     DesktopSimpleStorage.Clear();
 }
 public void StoredKeys_AreEmpty_AfterClear()
 {
     storage.Put("key", "value");
     DesktopSimpleStorage.Clear();
     Assert.That(DesktopSimpleStorage.StoredKeys, Is.Empty);
 }