code: public static void write(XID id, DataOutputStream dos) throws IOException {
  		dos.writeLong(id.uuid.getMostSignificantBits());
  		dos.writeLong(id.uuid.getLeastSignificantBits());
  	}
docs: Serializes an XID object binarily to a data output stream.
  
  @param id
  XID to be serialized.
  @param dos
  Data output stream to store XID serialization.