code: public String buildRangeString() {
          String lowerBoundString = "";
          if (this.lowerBoundBytes > -1) {
              lowerBoundString = String.valueOf(this.lowerBoundBytes);
          }
  
          String upperBoundString = "";
          if (this.upperBoundBytes > -1) {
              upperBoundString = String.valueOf(this.upperBoundBytes);
          }
          String rangeString = String.format("%s,%s", lowerBoundString, upperBoundString);
          if (rangeString == ",") {
              rangeString = null;
          }
          return rangeString;
      }
docs: Used to build out a string a http box api friendly range string.
  @return String that is uses as a rest parameter.