def DbGetInstanceNameList(self, argin):
        """ Returns the instance names found for specified server.

        :param argin: Server name
        :type: tango.DevString
        :return: The instance names found for specified server.
        :rtype: tango.DevVarStringArray """
        self._log.debug("In DbGetInstanceNameList()")
        return self.db.get_instance_name_list(argin)