@Override
  public boolean addInjectionInPlace(Language language, PsiLanguageInjectionHost host) {
    TemporaryPlacesRegistry.getInstance(host.getProject()).addHostWithUndo(host, InjectedLanguage.create(language.getID()));
    return true;
  }
@Override
  public boolean addInjectionInPlace(Language language, PsiLanguageInjectionHost host)