async fn update_cluster(
        &self,
        input: UpdateClusterRequest,
    ) -> Result<UpdateClusterResult, RusotoError<UpdateClusterError>> {
        let mut request = self.new_signed_request("POST", "/");
        request.add_header(
            "x-amz-target",
            "AWSIESnowballJobManagementService.UpdateCluster",
        );
        let encoded = serde_json::to_string(&input).unwrap();
        request.set_payload(Some(encoded));

        let response = self
            .sign_and_dispatch(request, UpdateClusterError::from_response)
            .await?;
        let mut response = response;
        let response = response.buffer().await.map_err(RusotoError::HttpDispatch)?;
        proto::json::ResponsePayload::new(&response).deserialize::<UpdateClusterResult, _>()
    }
<p>While a cluster's <code>ClusterState</code> value is in the <code>AwaitingQuorum</code> state, you can update some of the information associated with a cluster. Once the cluster changes to a different job state, usually 60 minutes after the cluster being created, this action is no longer available.</p>
rusoto/services/snowball/src/generated.rs