code: def DbGetAttributeAlias2(self, argin):
          
          self._log.debug("In DbGetAttributeAlias2()")
          attr_name = argin[0]
          return self.db.get_attribute_alias2(attr_name)
docs: Get the attribute alias from the attribute name.
          Returns one empty string if nothing found in database
  
          :param argin: The attribute name (dev_name/att_name)
          :type: tango.DevString
          :return: The attribute alias name (or empty string)
          :rtype: tango.DevString