How to use the google-ads-node.ApplyRecommendationRequest function in google-ads-node

public async applyRecommendation(
        resourceName: string | string[],
        options?: ServiceCreateOptions
    ): Promise {
        const request = new ApplyRecommendationRequest()
        request.setCustomerId(this.cid)

        if (resourceName instanceof Array) {
            const operations = resourceName.map(name => {
                const operation = new ApplyRecommendationOperation()
                operation.setResourceName(name)
                return operation
            })
            request.setOperationsList(operations)
        } else {
            const operation = new ApplyRecommendationOperation()
            operation.setResourceName(resourceName)
            request.setOperationsList([operation])
        }

        if (options && options.hasOwnProperty('partial_failure')) {