code: public static String presentMinMaxCount(long minmax) {
  		if (minmax == Long.MAX_VALUE || minmax == Long.MIN_VALUE) {
  			return UNDEF_STRING;
  		}
  		return String.valueOf(minmax);
  	}
docs: Returns min/max counter values in human readable form - if the value is max or min long value
  it is considered unused and string "undef" is returned.
  
  @param minmax counter extreme value
  @return counter value or "undef" if counter contains {@code Long.MIN_VALUE} or {@code Long.MAX_VALUE}