os.writeByte(tag); crti.write(os); mid.write(os); os.writeInt(index);
VMIdManager idm = VMIdManager.getDefault(); ClassReferenceTypeId crti = (ClassReferenceTypeId) idm.getReferenceTypeId(method.getDeclaringClass());  crti.writeTagged(os); method.writeId(os); os.writeLong(index);
  public void write(DataOutputStream os) throws IOException  {    os.writeByte(tag);    crti.write(os);    mid.write(os);    os.writeInt(index);  }