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aws-iot-device-sdk-v2

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/** * @packageDocumentation * @module shadow */ import * as model from "./model"; import { mqtt, mqtt5 } from "aws-crt"; /** * Error subclass for IotShadow service errors * * @category IotShadow */ export declare class IotShadowError extends Error { readonly payload?: mqtt.Payload | undefined; prototype: any; constructor(message?: string, payload?: mqtt.Payload | undefined); } /** * The AWS IoT Device Shadow service adds shadows to AWS IoT thing objects. Shadows are a simple data store for device properties and state. Shadows can make a device’s state available to apps and other services whether the device is connected to AWS IoT or not. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html * * @category IotShadow */ export declare class IotShadowClient { private mqttAdapter; private static INVALID_PAYLOAD_PARSING_ERROR; private static createClientError; constructor(connection?: mqtt.MqttClientConnection); /** * Creates a new IotShadowClient that uses the SDK Mqtt5 client internally. * * The pre-existing constructor that is bound to the MQTT311 client makes this awkward since we * must support * * ``` * new IotShadowClient(mqtt311connection); * ``` * * for backwards compatibility, but still want to be able to inject an MQTT5 client as well. * * @param client the MQTT5 client to use with this service client * * @return a new IotShadowClient instance */ static newFromMqtt5Client(client: mqtt5.Mqtt5Client): IotShadowClient; /** * Deletes a named shadow for an AWS IoT thing. * * If the device is offline, the PUBLISH packet will be sent once the connection resumes. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#delete-pub-sub-topic * * @param request Message to be serialized and sent * @param qos Quality of Service for delivering this message * @return Promise which returns a `mqtt.MqttRequest` which will contain the packet id of * the PUBLISH packet. * * * For QoS 0, completes as soon as the packet is sent. * * For QoS 1, completes when PUBACK is received. * * QoS 2 is not supported by AWS IoT. * * @category IotShadow */ publishDeleteNamedShadow(request: model.DeleteNamedShadowRequest, qos: mqtt.QoS): Promise<mqtt.MqttRequest>; /** * Deletes the (classic) shadow for an AWS IoT thing. * * If the device is offline, the PUBLISH packet will be sent once the connection resumes. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#delete-pub-sub-topic * * @param request Message to be serialized and sent * @param qos Quality of Service for delivering this message * @return Promise which returns a `mqtt.MqttRequest` which will contain the packet id of * the PUBLISH packet. * * * For QoS 0, completes as soon as the packet is sent. * * For QoS 1, completes when PUBACK is received. * * QoS 2 is not supported by AWS IoT. * * @category IotShadow */ publishDeleteShadow(request: model.DeleteShadowRequest, qos: mqtt.QoS): Promise<mqtt.MqttRequest>; /** * Gets a named shadow for an AWS IoT thing. * * If the device is offline, the PUBLISH packet will be sent once the connection resumes. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#get-pub-sub-topic * * @param request Message to be serialized and sent * @param qos Quality of Service for delivering this message * @return Promise which returns a `mqtt.MqttRequest` which will contain the packet id of * the PUBLISH packet. * * * For QoS 0, completes as soon as the packet is sent. * * For QoS 1, completes when PUBACK is received. * * QoS 2 is not supported by AWS IoT. * * @category IotShadow */ publishGetNamedShadow(request: model.GetNamedShadowRequest, qos: mqtt.QoS): Promise<mqtt.MqttRequest>; /** * Gets the (classic) shadow for an AWS IoT thing. * * If the device is offline, the PUBLISH packet will be sent once the connection resumes. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#get-pub-sub-topic * * @param request Message to be serialized and sent * @param qos Quality of Service for delivering this message * @return Promise which returns a `mqtt.MqttRequest` which will contain the packet id of * the PUBLISH packet. * * * For QoS 0, completes as soon as the packet is sent. * * For QoS 1, completes when PUBACK is received. * * QoS 2 is not supported by AWS IoT. * * @category IotShadow */ publishGetShadow(request: model.GetShadowRequest, qos: mqtt.QoS): Promise<mqtt.MqttRequest>; /** * Update a named shadow for a device. * * If the device is offline, the PUBLISH packet will be sent once the connection resumes. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-pub-sub-topic * * @param request Message to be serialized and sent * @param qos Quality of Service for delivering this message * @return Promise which returns a `mqtt.MqttRequest` which will contain the packet id of * the PUBLISH packet. * * * For QoS 0, completes as soon as the packet is sent. * * For QoS 1, completes when PUBACK is received. * * QoS 2 is not supported by AWS IoT. * * @category IotShadow */ publishUpdateNamedShadow(request: model.UpdateNamedShadowRequest, qos: mqtt.QoS): Promise<mqtt.MqttRequest>; /** * Update a device's (classic) shadow. * * If the device is offline, the PUBLISH packet will be sent once the connection resumes. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-pub-sub-topic * * @param request Message to be serialized and sent * @param qos Quality of Service for delivering this message * @return Promise which returns a `mqtt.MqttRequest` which will contain the packet id of * the PUBLISH packet. * * * For QoS 0, completes as soon as the packet is sent. * * For QoS 1, completes when PUBACK is received. * * QoS 2 is not supported by AWS IoT. * * @category IotShadow */ publishUpdateShadow(request: model.UpdateShadowRequest, qos: mqtt.QoS): Promise<mqtt.MqttRequest>; /** * Subscribes to the accepted topic for the DeleteNamedShadow operation. * * * subscribeToDeleteNamedShadowAccepted may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#delete-accepted-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToDeleteNamedShadowAccepted(request: model.DeleteNamedShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.DeleteShadowResponse) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribes to the rejected topic for the DeleteNamedShadow operation. * * * subscribeToDeleteNamedShadowRejected may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#delete-rejected-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToDeleteNamedShadowRejected(request: model.DeleteNamedShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.ErrorResponse) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribes to the accepted topic for the DeleteShadow operation * * * subscribeToDeleteShadowAccepted may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#delete-accepted-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToDeleteShadowAccepted(request: model.DeleteShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.DeleteShadowResponse) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribes to the rejected topic for the DeleteShadow operation * * * subscribeToDeleteShadowRejected may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#delete-rejected-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToDeleteShadowRejected(request: model.DeleteShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.ErrorResponse) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribes to the accepted topic for the GetNamedShadow operation. * * * subscribeToGetNamedShadowAccepted may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#get-accepted-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToGetNamedShadowAccepted(request: model.GetNamedShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.GetShadowResponse) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribes to the rejected topic for the GetNamedShadow operation. * * * subscribeToGetNamedShadowRejected may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#get-rejected-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToGetNamedShadowRejected(request: model.GetNamedShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.ErrorResponse) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribes to the accepted topic for the GetShadow operation. * * * subscribeToGetShadowAccepted may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#get-accepted-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToGetShadowAccepted(request: model.GetShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.GetShadowResponse) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribes to the rejected topic for the GetShadow operation. * * * subscribeToGetShadowRejected may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#get-rejected-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToGetShadowRejected(request: model.GetShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.ErrorResponse) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribe to NamedShadowDelta events for a named shadow of an AWS IoT thing. * * * subscribeToNamedShadowDeltaUpdatedEvents may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-delta-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToNamedShadowDeltaUpdatedEvents(request: model.NamedShadowDeltaUpdatedSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.ShadowDeltaUpdatedEvent) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribe to ShadowUpdated events for a named shadow of an AWS IoT thing. * * * subscribeToNamedShadowUpdatedEvents may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-documents-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToNamedShadowUpdatedEvents(request: model.NamedShadowUpdatedSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.ShadowUpdatedEvent) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribe to ShadowDelta events for the (classic) shadow of an AWS IoT thing. * * * subscribeToShadowDeltaUpdatedEvents may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-delta-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToShadowDeltaUpdatedEvents(request: model.ShadowDeltaUpdatedSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.ShadowDeltaUpdatedEvent) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribe to ShadowUpdated events for the (classic) shadow of an AWS IoT thing. * * * subscribeToShadowUpdatedEvents may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-documents-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToShadowUpdatedEvents(request: model.ShadowUpdatedSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.ShadowUpdatedEvent) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribes to the accepted topic for the UpdateNamedShadow operation * * * subscribeToUpdateNamedShadowAccepted may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-accepted-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToUpdateNamedShadowAccepted(request: model.UpdateNamedShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.UpdateShadowResponse) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribes to the rejected topic for the UpdateNamedShadow operation * * * subscribeToUpdateNamedShadowRejected may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-rejected-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToUpdateNamedShadowRejected(request: model.UpdateNamedShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.ErrorResponse) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribes to the accepted topic for the UpdateShadow operation * * * subscribeToUpdateShadowAccepted may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-accepted-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToUpdateShadowAccepted(request: model.UpdateShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.UpdateShadowResponse) => void): Promise<mqtt.MqttSubscribeRequest>; /** * Subscribes to the rejected topic for the UpdateShadow operation * * * subscribeToUpdateShadowRejected may be called while the device is offline, though the async * operation cannot complete successfully until the connection resumes. * * Once subscribed, `messageHandler` is invoked each time a message matching * the `topic` is received. It is possible for such messages to arrive before * the SUBACK is received. * * AWS documentation: https://docs.aws.amazon.com/iot/latest/developerguide/device-shadow-mqtt.html#update-rejected-pub-sub-topic * * @param request Subscription request configuration * @param qos Maximum requested QoS that server may use when sending messages to the client. * The server may grant a lower QoS in the SUBACK * @param messageHandler Callback invoked when message or error is received from the server. * @return Promise which returns a `mqtt.MqttSubscribeRequest` which will contain the * result of the SUBSCRIBE. The Promise resolves when a SUBACK is returned * from the server or is rejected when an exception occurs. * * @category IotShadow */ subscribeToUpdateShadowRejected(request: model.UpdateShadowSubscriptionRequest, qos: mqtt.QoS, messageHandler: (error?: IotShadowError, response?: model.ErrorResponse) => void): Promise<mqtt.MqttSubscribeRequest>; }