cache request parameter is not stored?

[HarelM]

The following is a request parameter that we are using: https://developer.mozilla.org/en-US/docs/Web/API/Request/cache But I'm unable to see it in the tests, here's my simple test:

    test('should be provided to fetch API in getJSON function', async () => {

            server.respondWith(request => {
                request.respond(200, {'Content-Type': 'application/json'}, '{"foo": "bar"}');
            });

            // this basically does a fetch request with cache as one of the options
            const promise = getJSON({url: 'http://example.com/test-params.json', cache: 'force-cache', headers: {'Authorization': 'Bearer 123'}}, new AbortController());

            server.respond();

            await promise;

            expect(server.requests.length).toBe(1);
            expect(server.requests[0].url).toBe('http://example.com/test-params.json');
            expect(server.requests[0].method).toBe('GET');
            console.log(server.requests[0]["cache"]);
            expect(server.requests[0]["cache"]).toBe('force-cache'); // I can't find cache in the request object...?
            expect(server.requests[0].requestHeaders["Authorization"]).toBe('Bearer 123');
        });

Any help would be appreciated :-)