class Prefser {

  public void remove(@NonNull String key) {
    Preconditions.checkNotNull(key, KEY_IS_NULL);
    if (!contains(key)) {
      return;
    }

    editor.remove(key).apply();
  }

  public  Prefser(@NonNull Context context);
  public  Prefser(@NonNull Context context, @NonNull JsonConverter jsonConverter);
  public  Prefser(@NonNull SharedPreferences sharedPreferences);
  @SuppressLint("CommitPrefEdits") public  Prefser(@NonNull SharedPreferences sharedPreferences,
      @NonNull JsonConverter jsonConverter);

}