code: private void scanFile(File file) {
          try {
              InplaceFileConverter fc = new InplaceFileConverter(ruleSet, progressListener);
              fc.convert(file);
          } catch (IOException exc) {
              addException(new ConversionException(exc.toString()));
          }
      }
docs: Convert the specified file Read each line and ask matcher implementation
  for conversion Rewrite the line returned by matcher
  
  @param file