"}");
NlsSupport support = NlsSupport.get(frame);
IEditableSupport editableSupport = support.getEditable();
IEditableSource editableSource = editableSupport.getEditableSources().get(0);
// do rename
editableSource.renameKey("rootPanel_title", "rootPanel_title2");
// apply commands
support.applyEditable(editableSupport);
// check
assertEditor(
"public class Test implements EntryPoint {",