async fn list_application_states(
        &self,
        input: ListApplicationStatesRequest,
    ) -> Result<ListApplicationStatesResult, RusotoError<ListApplicationStatesError>> {
        let mut request = self.new_signed_request("POST", "/");
        request.add_header("x-amz-target", "AWSMigrationHub.ListApplicationStates");
        let encoded = serde_json::to_string(&input).unwrap();
        request.set_payload(Some(encoded));

        let response = self
            .sign_and_dispatch(request, ListApplicationStatesError::from_response)
            .await?;
        let mut response = response;
        let response = response.buffer().await.map_err(RusotoError::HttpDispatch)?;
        proto::json::ResponsePayload::new(&response).deserialize::<ListApplicationStatesResult, _>()
    }
<p>Lists all the migration statuses for your applications. If you use the optional <code>ApplicationIds</code> parameter, only the migration statuses for those applications will be returned.</p>
rusoto/services/mgh/src/generated.rs