/// <summary>
 /// Initializes a new instance of the <see cref="SerializableObjectHolder"/> class.
 /// </summary>
 /// <param name="reader">The reader.</param>
 public SerializableObjectHolder(IPortableReader reader)
 {
     _item = PortableUtils.ReadSerializable <object>((PortableReaderImpl)reader.RawReader());
 }