/**
* Starts a new CZML packet on the given stream.
*
* @param output The stream to which to write the packet.
* @return The packet writer.
*/
public final PacketCesiumWriter openPacket(CesiumOutputStream output) {
PacketCesiumWriter packetWriter = m_packetWriter.getValue();
packetWriter.open(output);
return packetWriter;
}
