void marshalParams(Element parent,String prefix) throws MarshalException {
  throw new MarshalException("no parameters should " + "be specified for the " + getMessageDigestAlgorithm() + " DigestMethod algorithm");
}

void marshalParams ( Element parent , String prefix ) throws MarshalException { throw new MarshalException ( "no parameters should " + "be specified for the " + getMessageDigestAlgorithm ( ) + " DigestMethod algorithm" ) ; }
marshals the algorithm - specific parameters to an element and appends it to the specified parent element . by default , this method throws an exception since most digestmethod algorithms do not have parameters . subclasses should override it if they have parameters .
