void Start()
{
PhoneBook pb = new PhoneBook();
Group school = new Group("MIT");
Group harvard = new Group("Harvard");
Person nayoung = new Person("nayoung", 21, "010-0000-000");
Person sohee = new Person("sohee", 22, "010-0000-000");
Person hyosung = new Person("hyosung", 20, "010-0000-000");
school.AddContact(nayoung);
school.AddContact(sohee);
school.AddContact(hyosung);
Person dog = new Person("dog", 21, "010-0000-000");
Person pig = new Person("pig", 22, "010-0000-000");
Person cow = new Person("cow", 20, "010-0000-000");
harvard.AddContact(dog);
harvard.AddContact(pig);
harvard.AddContact(cow);
pb.groups.Add(school.name, school);
pb.groups.Add(harvard.name, harvard);
string jsonData = pb.ToJson();
string filePath = Path.Combine(Application.streamingAssetsPath, string.Format("{0}.json", "phonebook"));
Debug.LogFormat("Local Client Save : {0} // {1}", filePath, jsonData);
File.WriteAllText(filePath, jsonData);
string readJson = File.ReadAllText(filePath);
PhoneBook copypb = JsonObject.Parse <PhoneBook>(readJson);
Debug.LogFormat("copy pb toJson : {0}", copypb.ToJson());
}
