def _construct_deployment(self, rest_api):
        """Constructs and returns the ApiGateway Deployment.

        :param model.apigateway.ApiGatewayRestApi rest_api: the RestApi for this Deployment
        :returns: the Deployment to which this SAM Api corresponds
        :rtype: model.apigateway.ApiGatewayDeployment
        """
        deployment = ApiGatewayDeployment(self.logical_id + 'Deployment',
                                          attributes=self.passthrough_resource_attributes)
        deployment.RestApiId = rest_api.get_runtime_attr('rest_api_id')
        deployment.StageName = 'Stage'

        return deployment