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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 DbGetExportdDeviceListForClass(self, argin):
 """ Query the database for device exported for the specified class. :param argin: Class name :type: tango.DevString :return: Device exported list :rtype: tango.DevVarStringArray """

        self._log.debug("In DbGetExportdDeviceListForClass()")
        argin = replace_wildcard(argin)
        return self.db.get_exported_device_list_for_class(argin)