async fn create_grant_version(
        &self,
        input: CreateGrantVersionRequest,
    ) -> Result<CreateGrantVersionResponse, RusotoError<CreateGrantVersionError>> {
        let mut request = self.new_signed_request("POST", "/");
        request.add_header("x-amz-target", "AWSLicenseManager.CreateGrantVersion");
        let encoded = serde_json::to_string(&input).unwrap();
        request.set_payload(Some(encoded));

        let response = self
            .sign_and_dispatch(request, CreateGrantVersionError::from_response)
            .await?;
        let mut response = response;
        let response = response.buffer().await.map_err(RusotoError::HttpDispatch)?;
        proto::json::ResponsePayload::new(&response).deserialize::<CreateGrantVersionResponse, _>()
    }
<p>Creates a new version of the specified grant.</p>
rusoto/services/license-manager/src/generated.rs