C#

public class Buffer<TPack> where TPack : IPack<TPack> { ... }

TPack FromReceivedData(byte[] data, int startIndex);

[Serializable]
public class A : IDeserializationCallback
{
    public A()
    {
        m_MyString1 = "Test";
        m_MyString2 = "";
    }

    public string MyString1
    {
        get { return m_MyString1; }
        set { m_MyString1 = value; }
    }

    public string MyString2
    {
        get { return m_MyString2; }
        set { m_MyString2 = value; }
    }

    void IDeserializationCallback.OnDeserialization(Object sender)
    {
        m_MyString2 = m_MyString1 + m_MyString1;
    }

    private string m_MyString1;
    private string m_MyString2;
}