<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 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