@Override
  @Nullable
  public ValidationInfo validate() {
    GithubTagInfo tag = myReloadableComboBoxPanel.getSelectedValue();
    if (tag != null) {
      return null;
    }
    String errorMessage = StringUtil.notNullize(myReloadableComboBoxPanel.getErrorComponent().getText());
    if (errorMessage.isEmpty()) {
      errorMessage = IdeBundle.message("github.project.generator.versions.not.loaded.error");
    }
    return new ValidationInfo(errorMessage);
  }
@Override
  @Nullable
  public ValidationInfo validate()