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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def introspectRemoteObject(self, busName, objectPath, replaceKnownInterfaces=False):
 """ Calls org.freedesktop.DBus.Introspectable.Introspect @type busName: C{string} @param busName: Name of the bus containing the object @type objectPath: C{string} @param objectPath: Object Path to introspect @type replaceKnownInterfaces: C{bool} @param replaceKnownInterfaces: If True (defaults to False), the content of the introspected XML will override any pre-existing definitions of the contained interfaces. @rtype: L{twisted.internet.defer.Deferred} @returns: a Deferred to a list of L{interface.DBusInterface} instances created from the content of the introspected XML description of the object's interface. """

        d = self.callRemote(
            objectPath,
            'Introspect',
            interface='org.freedesktop.DBus.Introspectable',
            destination=busName,
        )

        def ok(xml_str):
            return introspection.getInterfacesFromXML(
                xml_str,
                replaceKnownInterfaces
            )

        def err(e):
            raise error.IntrospectionFailed(
                'Introspection Failed: ' + e.getErrorMessage()
            )

        d.addCallbacks(ok, err)

        return d