old_contents: core.Module("test.Kernel",
  {
    init : function() {
      core.io.Script.load("script/test-" + jasy.Env.getChecksum() + ".js");
    }
  });
  
new_contents: core.Module("test.Kernel",
  {
    init : function() {
      core.io.Script.load("script/test-" + jasy.Env.getId() + ".js");
    }
  });
  
subject: Move from getChecksum to getId