private static async Task SaveUserAsync(User user)
{
var jsonUser = JsonConvert.SerializeObject(user);
var folder = FileSystem.AppDataDirectory;
var fullPath = Path.Combine(folder, "user.json");
await File.WriteAllTextAsync(fullPath, jsonUser);
}
public Task <bool> UpdateUser(User updatedUser)
{
throw new NotImplementedException();
}
