private static ComboBox<String> createTargetOptionsCombo() {
    ComboBox<String> combo = new ComboBox<>(KNOWN_TARGETS);
    combo.insertItemAt(null, 0);
    combo.setRenderer(SimpleListCellRenderer.create(JavaCompilerBundle.message("settings.same.as.language.level"), String::toString));
    return combo;
  }
private static ComboBox<String> createTargetOptionsCombo()