/// <summary>
/// Constructor
/// </summary>
/// <param name="homeAccountId">Home account id in "uid.utid" format; can be null, for example when migrating the ADAL v3 cache</param>
/// <param name="username">UPN style , can be null</param>
/// <param name="environment">Identity provider for this account, e.g. <c>login.microsoftonline.com</c></param>
public Account(string homeAccountId, string username, string environment)
{
Username = username;
Environment = environment;
HomeAccountId = AccountId.ParseFromString(homeAccountId);
}