code: @Override
  	public void merge(MinMaxHolder another){
  		BigInteger anotherMin = toBigInteger(another.getMin());
  		if (anotherMin != null){
  			evaluate(anotherMin);
  		}
  		BigInteger anotherMax = toBigInteger(another.getMax());
  		if (anotherMax != null){
  			evaluate(anotherMax);
  		}
  	}
docs: Merge the min/max value from another instance into this one.
  @param another   another instance of MinMaxHolder