How to use the apify.openKeyValueStore function in apify

req.useExtendedUniqueKey = true;
            req.keepUrlFragment = this.input.keepUrlFragments;
            return req;
        });
        this.requestList = await Apify.openRequestList('CHEERIO_SCRAPER', startUrls);

        // RequestQueue if selected
        if (this.input.useRequestQueue) this.requestQueue = await Apify.openRequestQueue();

        // Dataset
        this.dataset = await Apify.openDataset();
        const { itemsCount } = await this.dataset.getInfo();
        this.pagesOutputted = itemsCount || 0;

        // KeyValueStore
        this.keyValueStore = await Apify.openKeyValueStore();
    }

req.useExtendedUniqueKey = true;
            req.keepUrlFragment = this.input.keepUrlFragments;
            return req;
        });
        this.requestList = await Apify.openRequestList('WEB_SCRAPER', startUrls);

        // RequestQueue if selected
        if (this.input.useRequestQueue) this.requestQueue = await Apify.openRequestQueue();

        // Dataset
        this.dataset = await Apify.openDataset();
        const { itemsCount } = await this.dataset.getInfo();
        this.pagesOutputted = itemsCount || 0;

        // KeyValueStore
        this.keyValueStore = await Apify.openKeyValueStore();
    }

req.useExtendedUniqueKey = true;
            req.keepUrlFragment = this.input.keepUrlFragments;
            return req;
        });
        this.requestList = await Apify.openRequestList('PUPPETEER_SCRAPER', startUrls);

        // RequestQueue if selected
        if (this.input.useRequestQueue) this.requestQueue = await Apify.openRequestQueue();

        // Dataset
        this.dataset = await Apify.openDataset();
        const { itemsCount } = await this.dataset.getInfo();
        this.pagesOutputted = itemsCount || 0;

        // KeyValueStore
        this.keyValueStore = await Apify.openKeyValueStore();
    }