async fn purchase_reserved_node_offering(
        &self,
        input: PurchaseReservedNodeOfferingMessage,
    ) -> Result<PurchaseReservedNodeOfferingResult, RusotoError<PurchaseReservedNodeOfferingError>>
    {
        let mut request = SignedRequest::new("POST", "redshift", &self.region, "/");
        let params = self.new_params("PurchaseReservedNodeOffering");
        let mut params = params;
        PurchaseReservedNodeOfferingMessageSerializer::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, PurchaseReservedNodeOfferingError::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 = PurchaseReservedNodeOfferingResultDeserializer::deserialize(
                "PurchaseReservedNodeOfferingResult",
                stack,
            )?;
            skip_tree(stack);
            xml_util::end_element(actual_tag_name, stack)?;
            Ok(result)
        })
        .await?;

        drop(response); // parse non-payload
        Ok(result)
    }
<p>Allows you to purchase reserved nodes. Amazon Redshift offers a predefined set of reserved node offerings. You can purchase one or more of the offerings. You can call the <a>DescribeReservedNodeOfferings</a> API to obtain the available reserved node offerings. You can call this API by providing a specific reserved node offering and the number of nodes you want to reserve. </p> <p> For more information about reserved node offerings, go to <a href="https://docs.aws.amazon.com/redshift/latest/mgmt/purchase-reserved-node-instance.html">Purchasing Reserved Nodes</a> in the <i>Amazon Redshift Cluster Management Guide</i>.</p>
rusoto/services/redshift/src/generated.rs