How to use the testcafe-hammerhead.ResponseMock function in testcafe-hammerhead

respond (body, statusCode, headers) {
        if (!this.pendingRequestFilterRuleInit)
            throw new APIError('respond', RUNTIME_ERRORS.requestHookConfigureAPIError, RequestMock.name, "The 'onRequestTo' method was not called before 'respond'. You must call the 'onRequestTo' method to provide the URL requests to which are mocked.");

        const mock = new ResponseMock(body, statusCode, headers);
        const rule = new RequestFilterRule(this.pendingRequestFilterRuleInit);

        this.requestFilterRules.push(rule);
        this.mocks.set(rule, mock);
        this.pendingRequestFilterRuleInit = null;

        return this;
    }
}