async fn describe_default_cluster_parameters(
        &self,
        input: DescribeDefaultClusterParametersMessage,
    ) -> Result<
        DescribeDefaultClusterParametersResult,
        RusotoError<DescribeDefaultClusterParametersError>,
    > {
        let mut request = SignedRequest::new("POST", "redshift", &self.region, "/");
        let params = self.new_params("DescribeDefaultClusterParameters");
        let mut params = params;
        DescribeDefaultClusterParametersMessageSerializer::serialize(&mut params, "", &input);
        request.set_payload(Some(serde_urlencoded::to_string(&params).unwrap()));
        request.set_content_type("application/x-www-form-urlencoded".to_owned());

        let response = self
            .sign_and_dispatch(
                request,
                DescribeDefaultClusterParametersError::from_response,
            )
            .await?;

        let mut response = response;
        let result = xml_util::parse_response(&mut response, |actual_tag_name, stack| {
            xml_util::start_element(actual_tag_name, stack)?;
            let result = DescribeDefaultClusterParametersResultDeserializer::deserialize(
                "DescribeDefaultClusterParametersResult",
                stack,
            )?;
            skip_tree(stack);
            xml_util::end_element(actual_tag_name, stack)?;
            Ok(result)
        })
        .await?;

        drop(response); // parse non-payload
        Ok(result)
    }
<p>Returns a list of parameter settings for the specified parameter group family.</p> <p> For more information about parameters and parameter groups, go to <a href="https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-parameter-groups.html">Amazon Redshift Parameter Groups</a> in the <i>Amazon Redshift Cluster Management Guide</i>.</p>
rusoto/services/redshift/src/generated.rs