public static bool HasData(Uri u, out AuthenticationObject o)
 {
     foreach (AuthenticationObject obj in data)
     {
         if (obj.Url.Equals(u))
         {
             o = obj;
             return true;
         }
     }
     o = null;
     return false;
 }
 public static void Remove(AuthenticationObject o)
 {
     data.Remove(o);
     Save();
 }