public java.lang.String signXML(java.lang.String xmlString,java.lang.String certAlias) throws XMLSignatureException {
  return signXML(xmlString,certAlias,null);
}

public java . lang . String signXML ( java . lang . String xmlString , java . lang . String certAlias ) throws XMLSignatureException { return signXML ( xmlString , certAlias , null ) ; }
sign the xml string using enveloped signatures .
