def get_fault(self, reply):
        """
        Extract the fault from the specified soap reply.  If I{faults} is True,
        an exception is raised.  Otherwise, the I{unmarshalled} fault L{Object}
        is returned.  This method is called when the server raises a
        I{web fault}.
        @param reply: A soap reply message.
        @type reply: str
        @return: A fault object.
        @rtype: tuple ( L{Element}, L{Object} )
        """
        reply = self.replyfilter(reply)
        sax = Parser()
        faultroot = sax.parse(string=reply)
        soapenv = faultroot.getChild('Envelope')
        soapbody = soapenv.getChild('Body')
        fault = soapbody.getChild('Fault')
        unmarshaller = self.unmarshaller(False)
        p = unmarshaller.process(fault)
        if self.options().faults:
            raise WebFault(p, faultroot)
        return (faultroot, p.detail)