async fn get_default_patch_baseline(
        &self,
        input: GetDefaultPatchBaselineRequest,
    ) -> Result<GetDefaultPatchBaselineResult, RusotoError<GetDefaultPatchBaselineError>> {
        let mut request = self.new_signed_request("POST", "/");
        request.add_header("x-amz-target", "AmazonSSM.GetDefaultPatchBaseline");
        let encoded = serde_json::to_string(&input).unwrap();
        request.set_payload(Some(encoded));

        let response = self
            .sign_and_dispatch(request, GetDefaultPatchBaselineError::from_response)
            .await?;
        let mut response = response;
        let response = response.buffer().await.map_err(RusotoError::HttpDispatch)?;
        proto::json::ResponsePayload::new(&response)
            .deserialize::<GetDefaultPatchBaselineResult, _>()
    }
<p>Retrieves the default patch baseline. Note that Systems Manager supports creating multiple default patch baselines. For example, you can create a default patch baseline for each operating system.</p> <p>If you do not specify an operating system value, the default patch baseline for Windows is returned.</p>
rusoto/services/ssm/src/generated.rs