code: public static final Function<BigDecimal,BigDecimal> roundBigDecimal(final int scale, final RoundingMode roundingMode) {
          return FnNumber.roundBigDecimal(scale, roundingMode);
  	}
docs: <p>
  It rounds the input number with the given scale and {@link RoundingMode}. The input
  number will be converted into a {@link BigDecimal} with the given scale and
  roundingMode
  </p>
  
  @param scale the scale
  @param roundingMode the {@link RoundingMode}
  @return the {@link BigDecimal} representation of the input rounded based on
  the given parameters