private @Nullable WizardInputField<?> getBasePackageField() {
    for (WizardInputField<?> field : getAdditionalFields()) {
      if (ProjectTemplateParameterFactory.IJ_BASE_PACKAGE.equals(field.getId())) {
        return field;
      }
    }
    return null;
  }
private @Nullable WizardInputField<?> getBasePackageField()