code: @Override
      public boolean isAnError(final int lineNo) {
          for (int i = 0; i < errors.size(); i++) {
              if (errors.get(i).getLineNo() == lineNo && errors.get(i).getErrorLevel() > 1) {
                  return true;
              }
          }
          return false;
      }
docs: /*
  (non-Javadoc)
  
  @see net.sf.flatpack.DataSet#isAnError(int)