private void requestExpectPolicySuccess(String headerName, String headerValue) throws Throwable {
        final PolicyTestRequest request = PolicyTestRequest.build(PolicyTestRequestType.GET, "/example/path");
        request.header(headerName, headerValue);
        final PolicyTestResponse response = send(request);

        assertEquals(HttpURLConnection.HTTP_OK, response.code());
        assertNotNull(response.body());
    }
Makes a request with the given {@code method} to the specified {@code resource}, expecting an
HTTP 200 response status from the {@link EchoBackEndApi}.

@param headerName  the HTTP header name
@param headerValue the HTTP header value
plugins/header-allow-deny-policy/src/test/java/io/apiman/plugins/headerallowdeny/HeaderAllowDenyPolicyTest.java