public void test_replaceUrl_withNullSessionId() {
        final String url = "file:///home/user/";
        assertEquals(url, pathMappingHelper.replaceUrl((String) null, url));
    }

    public void test_replaceUrl_withNonExistentSessionId() {
        final String url = "file:///home/user/";
        assertEquals(url, pathMappingHelper.replaceUrl("nonexistent", url));
    }

    public void test_replaceUrl_withEmptyList() {