@Override
  public void findExistingNameConflicts(@NotNull PsiElement element, @NotNull String newName, @NotNull MultiMap<PsiElement, String> conflicts) {
    final String scriptName = FileUtilRt.getNameWithoutExtension(newName);
    if (!StringUtil.isJavaIdentifier(scriptName)) {
      final PsiClass script = ((GroovyFile)element).getScriptClass();
      conflicts.putValue(script, GroovyRefactoringBundle.message("cannot.rename.script.class.to.0", script.getName(), scriptName));
    }
  }
@Override
  public void findExistingNameConflicts(@NotNull PsiElement element, @NotNull String newName, @NotNull MultiMap<PsiElement, String> conflicts)