code: public String cleanFixedLine(final String line) {
  
          StringBuilder cleanedLine = new StringBuilder();
          int length = line.length();
  
          /* Clear sequence numbering */
          for (int i = 0; i < _startColumn - 1; i++) {
              cleanedLine.append(" ");
          }
  
          /* Trim anything beyond end column */
          if (length > _startColumn - 1) {
              String areaA = line.substring(_startColumn - 1,
                      (length > _endColumn) ? _endColumn : length);
  
              cleanedLine.append(areaA);
          }
          return cleanedLine.toString();
      }
docs: Clear sequence numbers in column 1-6 and anything beyond column 72.
  
  @param line the line of code
  @return a line of code without sequence numbers