How to use node-opcua-service-write - 4 common examples

self.performMessageTransaction(request, function (err, response) {

        /* istanbul ignore next */
        if (err) {
            return callback(err, response);
        }
        if (response.responseHeader.serviceResult.isNot(StatusCodes.Good)) {
            return callback(new Error(response.responseHeader.serviceResult.toString()));
        }
        assert(response instanceof write_service.WriteResponse);
        assert(nodesToWrite.length === response.results.length);
        callback(null, isArray ? response.results : response.results[0]);
    });
};

ClientSession.prototype.write = function (nodesToWrite, callback) {

    const self = this;

    const isArray = _.isArray(nodesToWrite);
    if (!isArray) {
        nodesToWrite = [nodesToWrite];
    }

    assert(_.isFunction(callback));
    assert(_.isArray(nodesToWrite), "nodesToWrite must be an array");

    const request = new write_service.WriteRequest({nodesToWrite: nodesToWrite});

    self.performMessageTransaction(request, function (err, response) {

        /* istanbul ignore next */
        if (err) {
            return callback(err, response);
        }
        if (response.responseHeader.serviceResult.isNot(StatusCodes.Good)) {
            return callback(new Error(response.responseHeader.serviceResult.toString()));
        }
        assert(response instanceof write_service.WriteResponse);
        assert(nodesToWrite.length === response.results.length);
        callback(null, isArray ? response.results : response.results[0]);
    });
};

public writeAttribute(
        context: SessionContext,
        writeValueOptions: WriteValueOptions | WriteValue,
        callback?: (err: Error | null, statusCode?: StatusCode) => void
    ): any {

        if (!callback) {
            throw new Error("Internal error");
        }
        const writeValue: WriteValue = writeValueOptions instanceof WriteValue
            ? writeValueOptions as WriteValue
            : new WriteValue(writeValueOptions);

        assert(context instanceof SessionContext);
        assert(writeValue instanceof WriteValue);
        assert(writeValue.value instanceof DataValue);
        assert(writeValue.value!.value instanceof Variant);
        assert(_.isFunction(callback));

        // Spec 1.0.2 Part 4 page 58
        // If the SourceTimestamp or the ServerTimestamp is specified, the Server shall
        // use these values.

        // xx _apply_default_timestamps(writeValue.value);

        switch (writeValue.attributeId) {
            case AttributeIds.Value:
                this.writeValue(context, writeValue.value!, writeValue.indexRange!, callback);

const ModifyMonitoredItemsRequest = subscription_service.ModifyMonitoredItemsRequest;
const ModifyMonitoredItemsResponse = subscription_service.ModifyMonitoredItemsResponse;
const MonitoredItemModifyResult = subscription_service.MonitoredItemModifyResult;

const MonitoredItemCreateResult = subscription_service.MonitoredItemCreateResult;
const SetPublishingModeRequest = subscription_service.SetPublishingModeRequest;
const SetPublishingModeResponse = subscription_service.SetPublishingModeResponse;

const CallRequest = call_service.CallRequest;
const CallResponse = call_service.CallResponse;

const ReadRequest = read_service.ReadRequest;
const ReadResponse = read_service.ReadResponse;

const WriteRequest = write_service.WriteRequest;
const WriteResponse = write_service.WriteResponse;

const ReadValueId = read_service.ReadValueId;

const HistoryReadRequest = historizing_service.HistoryReadRequest;
const HistoryReadResponse = historizing_service.HistoryReadResponse;

const BrowseRequest = browse_service.BrowseRequest;
const BrowseResponse = browse_service.BrowseResponse;

const BrowseNextRequest = browse_service.BrowseNextRequest;
const BrowseNextResponse = browse_service.BrowseNextResponse;

const RegisterNodesRequest = register_node_service.RegisterNodesRequest;
const RegisterNodesResponse = register_node_service.RegisterNodesResponse;
const UnregisterNodesRequest = register_node_service.UnregisterNodesRequest;
const UnregisterNodesResponse = register_node_service.UnregisterNodesResponse;