How to use the apify.getEnv function in apify

if (input.debugLog) log.setLevel(log.LEVELS.DEBUG);

        // Keep this as string to be immutable.
        this.rawInput = JSON.stringify(input);

        // Attempt to load page function from disk if not present on input.
        tools.maybeLoadPageFunctionFromDisk(input, __dirname);

        // Validate INPUT if not running on Apify Cloud Platform.
        if (!Apify.isAtHome()) tools.checkInputOrThrow(input, SCHEMA);

        /**
         * @type {Input}
         */
        this.input = input;
        this.env = Apify.getEnv();

        // Validations
        if (this.input.pseudoUrls.length && !this.input.useRequestQueue) {
            throw new Error('Cannot enqueue links using Pseudo-URLs without using a request queue. '
                + 'Either enable the "Use request queue" option or '
                + 'remove your Pseudo-URLs.');
        }
        this.input.pseudoUrls.forEach((purl) => {
            if (!tools.isPlainObject(purl)) throw new Error('The pseudoUrls Array must only contain Objects.');
            if (purl.userData && !tools.isPlainObject(purl.userData)) throw new Error('The userData property of a pseudoUrl must be an Object.');
        });
        this.input.initialCookies.forEach((cookie) => {
            if (!tools.isPlainObject(cookie)) throw new Error('The initialCookies Array must only contain Objects.');
        });
        this.input.waitUntil.forEach((event) => {
            if (!/^(domcontentloaded|load|networkidle2|networkidle0)$/.test(event)) {

if (input.debugLog) log.setLevel(log.LEVELS.DEBUG);

        // Keep this as string to be immutable.
        this.rawInput = JSON.stringify(input);

        // Attempt to load page function from disk if not present on input.
        tools.maybeLoadPageFunctionFromDisk(input, __dirname);

        // Validate INPUT if not running on Apify Cloud Platform.
        if (!Apify.isAtHome()) tools.checkInputOrThrow(input, SCHEMA);

        /**
         * @type {Input}
         */
        this.input = input;
        this.env = Apify.getEnv();

        // Validations
        if (this.input.pseudoUrls.length && !this.input.useRequestQueue) {
            throw new Error('Cannot enqueue links using Pseudo-URLs without using a request queue. '
                + 'Either enable the "Use request queue" option or '
                + 'remove your Pseudo-URLs.');
        }
        this.input.pseudoUrls.forEach((purl) => {
            if (!tools.isPlainObject(purl)) throw new Error('The pseudoUrls Array must only contain Objects.');
            if (purl.userData && !tools.isPlainObject(purl.userData)) throw new Error('The userData property of a pseudoUrl must be an Object.');
        });
        this.input.initialCookies.forEach((cookie) => {
            if (!tools.isPlainObject(cookie)) throw new Error('The initialCookies Array must only contain Objects.');
        });
        this.input.waitUntil.forEach((event) => {
            if (!/^(domcontentloaded|load|networkidle2|networkidle0)$/.test(event)) {

if (input.debugLog) log.setLevel(log.LEVELS.DEBUG);

        // Keep this as string to be immutable.
        this.rawInput = JSON.stringify(input);

        // Attempt to load page function from disk if not present on input.
        tools.maybeLoadPageFunctionFromDisk(input, __dirname);

        // Validate INPUT if not running on Apify Cloud Platform.
        if (!Apify.isAtHome()) tools.checkInputOrThrow(input, SCHEMA);

        /**
         * @type {Input}
         */
        this.input = input;
        this.env = Apify.getEnv();

        // Validations
        if (this.input.pseudoUrls.length && !this.input.useRequestQueue) {
            throw new Error('Cannot enqueue links using Pseudo-URLs without using a request queue. '
                + 'Either enable the "Use request queue" option or '
                + 'remove your Pseudo-URLs.');
        }
        this.input.pseudoUrls.forEach((purl) => {
            if (!tools.isPlainObject(purl)) throw new Error('The pseudoUrls Array must only contain Objects.');
            if (purl.userData && !tools.isPlainObject(purl.userData)) throw new Error('The userData property of a pseudoUrl must be an Object.');
        });
        this.initialCookies = this.input.initialCookies.map((cookie) => {
            if (!tools.isPlainObject(cookie)) throw new Error('The initialCookies Array must only contain Objects.');
            return `${cookie.key || cookie.name}=${cookie.value}`;
        });
        if (this.input.useCookieJar) this.cookieJar = new CookieJar();