/// <summary>
/// Constructor that requires the security DAO
/// </summary>
/// <param name="db">Interface for the user security dao</param>
public UserManager(IUserSecurityDAO db, UserItem user)
{
_db = db;
Permission = new Authorization(user);
}
/// <summary>
/// Logs the current user out of the vending machine system
/// </summary>
public void LogoutUser()
{
Permission = new Authorization(null);
}