public void removeAttribute(String name) {
        parent.context().remove(name);
    }
@Test
    void testRemoveAttribute() {
        URI uri = URI.create("http://localhost:8080/test");
        HttpRequest httpReq = newRequest(uri, HttpRequest.Method.GET, HttpRequest.Version.HTTP_1_1);
        DiscFilterRequest request = new DiscFilterRequest(httpReq);
        request.setAttribute("some_attr", "some_value");

        assertTrue(request.containsAttribute("some_attr"));

        request.removeAttribute("some_attr");

        assertFalse(request.containsAttribute("some_attr"));
    }