code: public void setEncoding(String encoding)
      throws UnsupportedEncodingException
    {
      if (encoding != null) {
        _readEncoding = Encoding.getReadEncoding(this, encoding);
        _readEncodingName = Encoding.getMimeName(encoding);
      }
      else {
        _readEncoding = null;
        _readEncodingName = null;
      }
    }
docs: Sets the encoding for the converter.