sbool addByteCodePathToClassLoader(ClassLoader cl, File bytecode, S libraryID default null) ctex {
  print("Adding byte code path " + bytecode + " to " + cl);
  
  // new method signature
  try object Bool b = callOpt(cl, "addFile", bytecode, libraryID);
  
  // legacy method signature
  ret isTrue(call(cl, "addFile", bytecode));
}