How to use the @octokit/graphql.withCustomRequest function in @octokit/graphql

options.userAgent,
            `octokit-core.js/${VERSION} ${getUserAgent()}`,
        ]
            .filter(Boolean)
            .join(" ");
        if (options.baseUrl) {
            requestDefaults.baseUrl = options.baseUrl;
        }
        if (options.previews) {
            requestDefaults.mediaType.previews = options.previews;
        }
        if (options.timeZone) {
            requestDefaults.headers["time-zone"] = options.timeZone;
        }
        this.request = request.defaults(requestDefaults);
        this.graphql = withCustomRequest(this.request).defaults({
            ...requestDefaults,
            baseUrl: requestDefaults.baseUrl.replace(/\/api\/v3$/, "/api"),
        });
        this.log = Object.assign({
            debug: () => { },
            info: () => { },
            warn: console.warn.bind(console),
            error: console.error.bind(console),
        }, options.log);
        this.hook = hook;
        // (1) If neither `options.authStrategy` nor `options.auth` are set, the `octokit` instance
        //     is unauthenticated. The `this.auth()` method is a no-op and no request hook is registred.
        // (2) If only `options.auth` is set, use the default token authentication strategy.
        // (3) If `options.authStrategy` is set then use it and pass in `options.auth`. Always pass own request as many strategies accept a custom request instance.
        // TODO: type `options.auth` based on `options.authStrategy`.
        if (!options.authStrategy) {

export function addGraphQL (client: GitHubAPI) {
  const graphqlRequest = (client.request as any as typeof request).defaults({
    ...(process.env.GHE_HOST ? { baseUrl: `https://${process.env.GHE_HOST}/api` } : {})
  })
  const graphql = withCustomRequest(graphqlRequest)

  client.graphql = (...args: any[]): any => {
    if (args[2]) {
      // tslint:disable-next-line:no-console
      console.warn(`github.graphql: passing extra headers as 3rd argument is deprecated. You can pass headers in the 2nd argument instead, using the "headers" key:

    github.graphql(query, { headers })

See https://probot.github.io/docs/github-api/#graphql-api`)

      args[1] = Object.assign(args[1] || {}, { headers: args[2] })
    }

    return graphql(args[0], args[1])
  }
  // tslint:disable-next-line:deprecation

requestDefaults.headers["user-agent"] = [options.userAgent, `octokit-core.js/${VERSION} ${universalUserAgent.getUserAgent()}`].filter(Boolean).join(" ");

    if (options.baseUrl) {
      requestDefaults.baseUrl = options.baseUrl;
    }

    if (options.previews) {
      requestDefaults.mediaType.previews = options.previews;
    }

    if (options.timeZone) {
      requestDefaults.headers["time-zone"] = options.timeZone;
    }

    this.request = request.request.defaults(requestDefaults);
    this.graphql = graphql.withCustomRequest(this.request).defaults(_objectSpread2(_objectSpread2({}, requestDefaults), {}, {
      baseUrl: requestDefaults.baseUrl.replace(/\/api\/v3$/, "/api")
    }));
    this.log = Object.assign({
      debug: () => {},
      info: () => {},
      warn: console.warn.bind(console),
      error: console.error.bind(console)
    }, options.log);
    this.hook = hook; // (1) If neither `options.authStrategy` nor `options.auth` are set, the `octokit` instance
    //     is unauthenticated. The `this.auth()` method is a no-op and no request hook is registred.
    // (2) If only `options.auth` is set, use the default token authentication strategy.
    // (3) If `options.authStrategy` is set then use it and pass in `options.auth`. Always pass own request as many strategies accept a custom request instance.
    // TODO: type `options.auth` based on `options.authStrategy`.

    if (!options.authStrategy) {
      if (!options.auth) {

options.userAgent,
            `octokit-core.js/${VERSION} ${getUserAgent()}`,
        ]
            .filter(Boolean)
            .join(" ");
        if (options.baseUrl) {
            requestDefaults.baseUrl = options.baseUrl;
        }
        if (options.previews) {
            requestDefaults.mediaType.previews = options.previews;
        }
        if (options.timeZone) {
            requestDefaults.headers["time-zone"] = options.timeZone;
        }
        this.request = request.defaults(requestDefaults);
        this.graphql = withCustomRequest(this.request).defaults({
            ...requestDefaults,
            baseUrl: requestDefaults.baseUrl.replace(/\/api\/v3$/, "/api"),
        });
        this.log = Object.assign({
            debug: () => { },
            info: () => { },
            warn: console.warn.bind(console),
            error: console.error.bind(console),
        }, options.log);
        this.hook = hook;
        // (1) If neither `options.authStrategy` nor `options.auth` are set, the `octokit` instance
        //     is unauthenticated. The `this.auth()` method is a no-op and no request hook is registred.
        // (2) If only `options.auth` is set, use the default token authentication strategy.
        // (3) If `options.authStrategy` is set then use it and pass in `options.auth`. Always pass own request as many strategies accept a custom request instance.
        // TODO: type `options.auth` based on `options.authStrategy`.
        if (!options.authStrategy) {