Unity：インスペクターでInterfaceを可視化する、SerializeReferenceの使い方（Inspector、神機能？、unity2019.3）

    interface IData
    {
    }

    enum DataType
    {
        User,
        Address,
        Tel
    }

    class DataA : IData
    {
        public DataType type = DataType.User;
        public int age;
        public string firstName;
        public string lastName;
    }

    class DataB : IData
    {
        public DataType type = DataType.Address;
        public string zipCode;
        public string address;
    }

    class DataC : IData
    {
        public DataType type = DataType.Tel;
        public string tel;
    }

public class SampleObject : MonoBehaviour
{
    [SerializeReference]
    List<IData> list = new List<IData>();

    void Start()
    {
        list.Add(new DataA() { age = 17, firstName = "unity", lastName = "taro" });
        list.Add(new DataB() { zipCode = "111-1111", address ="unity japan" });
        list.Add(new DataC() { tel = "2019.3" });
    }
}