internal void SaveTo(System.IO.BinaryWriter writer)
{
writer.Write(LastAccess.ToBinary());
writer.Write(BodyLength);
writer.Write(ETag);
writer.Write(LastModified);
writer.Write(Expires.ToBinary());
writer.Write(Age);
writer.Write(MaxAge);
writer.Write(Date.ToBinary());
writer.Write(MustRevalidate);
writer.Write(Received.ToBinary());
}