code: public BitmapHandler decode(File file) {
          try {
              return decode(new FileInputStream(file));
          } catch (FileNotFoundException e) {
              throw new RuntimeException("unexpected error.", e);
          }
      }
docs: decodes the given WSQ file and returns a <code>BitmapHandler</code> containing the decoded info.
  
  @param file the WSQ image file , not null
  @return a BitmapHandler containing the decoded info, not null
  @see BitmapHandler