protected void writePackager(ObjectOutput out) throws IOException {
out.writeByte('P');
String pclass = packager.getClass().getName();
byte[] b = pclass.getBytes();
out.writeShort(b.length);
out.write(b);
}
protected void writeHeader(ObjectOutput out) throws IOException {
int len = header.getLength();
if (len > 0) {
out.writeByte('H');
out.writeShort(len);
out.write(header.pack());
}
}
public void writeExternal(ObjectOutput out) throws IOException {
out.write(this.opcode);
}