@Nullable
    @Override
    public <T extends PsiElement> T show(@NotNull String errorTitle, @Nullable String selectedItem, @NotNull FileCreator<T> creator) {
      throw new UnsupportedOperationException("Modal dialog is not supported by this builder");
    }
@Nullable
    @Override
    public <T extends PsiElement> T show(@NotNull String errorTitle, @Nullable String selectedItem, @NotNull FileCreator<T> creator)