async fn attach_instances_to_load_balancer(
        &self,
        input: AttachInstancesToLoadBalancerRequest,
    ) -> Result<AttachInstancesToLoadBalancerResult, RusotoError<AttachInstancesToLoadBalancerError>>
    {
        let mut request = self.new_signed_request("POST", "/");
        request.add_header(
            "x-amz-target",
            "Lightsail_20161128.AttachInstancesToLoadBalancer",
        );
        let encoded = serde_json::to_string(&input).unwrap();
        request.set_payload(Some(encoded));

        let response = self
            .sign_and_dispatch(request, AttachInstancesToLoadBalancerError::from_response)
            .await?;
        let mut response = response;
        let response = response.buffer().await.map_err(RusotoError::HttpDispatch)?;
        proto::json::ResponsePayload::new(&response)
            .deserialize::<AttachInstancesToLoadBalancerResult, _>()
    }
<p>Attaches one or more Lightsail instances to a load balancer.</p> <p>After some time, the instances are attached to the load balancer and the health check status is available.</p> <p>The <code>attach instances to load balancer</code> operation supports tag-based access control via resource tags applied to the resource identified by <code>load balancer name</code>. For more information, see the <a href="https://lightsail.aws.amazon.com/ls/docs/en/articles/amazon-lightsail-controlling-access-using-tags">Lightsail Dev Guide</a>.</p>
rusoto/services/lightsail/src/generated.rs