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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 DbGetDeviceServerClassList(self, argin):
 """ Get list of Tango classes for a device server :param argin: device server process name :type: tango.DevString :return: list of classes for this device server :rtype: tango.DevVarStringArray """

        self._log.debug("In DbGetDeviceServerClassList()")
        argin = replace_wildcard(argin)
        return self.db.get_server_class_list(argin)