deleteAccount method

Implementation

Future<void> deleteAccount() async {
  if (_userId is String) {
    final userId = _userId;
    state = AsyncValue.loading();
    try {
      await _userService.deleteAccount(userId);
    } catch (err) {
      /// Restore data
      state = AsyncValue.data(await _fetchUserData());
      throw err;
    }
  }
}