code: def _construct_alias(self, name, function, version):
          
  
          if not name:
              raise InvalidResourceException(self.logical_id, "Alias name is required to create an alias")
  
          logical_id = "{id}Alias{suffix}".format(id=function.logical_id, suffix=name)
          alias = LambdaAlias(logical_id=logical_id, attributes=self.get_passthrough_resource_attributes())
          alias.Name = name
          alias.FunctionName = function.get_runtime_attr('name')
          alias.FunctionVersion = version.get_runtime_attr("version")
  
          return alias
docs: Constructs a Lambda Alias for the given function and pointing to the given version
  
          :param string name: Name of the alias
          :param model.lambda_.LambdaFunction function: Lambda function object to associate the alias with
          :param model.lambda_.LambdaVersion version: Lambda version object to associate the alias with
          :return: Lambda alias object
          :rtype model.lambda_.LambdaAlias