protected static void prepareXmlDoc(){
  String toSignFilePath=getPathFromResource("/xml_example.xml");
  toSignDocument=new FileDocument(toSignFilePath);
}

protected static void prepareXmlDoc ( ) { String toSignFilePath = getPathFromResource ( "/xml_example.xml" ) ; toSignDocument = new FileDocument ( toSignFilePath ) ; }
this method sets the common parameters .
