@Nullable
  private static String getStringConstantExpression(@Nullable UCallExpression callExpression, int index) {
    if (callExpression == null) {
      return null;
    }
    UExpression argument = callExpression.getArgumentForParameter(index);
    if (argument == null) {
      return null;
    }
    return UastUtils.evaluateString(argument);
  }
@Nullable
  private static String getStringConstantExpression(@Nullable UCallExpression callExpression, int index)