'Requests the special filenames.
:param fuzzable_request: A fuzzable_request instance that contains
(among other things) the URL to test.'

def discover(self, fuzzable_request):

    if ((len(self._already_tested) < self.MAX_TESTS) and (fuzzable_request.get_url() not in self._already_tested)):
        self._already_tested.add(fuzzable_request.get_url())
        test_generator = self._generate_urls(fuzzable_request.get_url())
        self.worker_pool.map(self._send_and_check, test_generator, chunksize=1)
