docs: public static boolean lessThan(SoyValue left, SoyValue right) {
      if (left instanceof SoyString && right instanceof SoyString) {
        return left.stringValue().compareTo(right.stringValue()) < 0;
      } else if (left instanceof IntegerData && right instanceof IntegerData) {
        return left.longValue() < right.longValue();
      } else {
        return left.numberValue() < right.numberValue();
      }
    }