public static MountTo to(final String target) {
        return new MountTo(checkNotNullOrEmpty(target, "Target should not be null"));
    }
@Test
    public void should_mount_with_other_handler() throws Exception {
        server.mount(MOUNT_DIR, to("/dir")).response(header(HttpHeaders.CONTENT_TYPE, "text/plain"));

        running(server, () -> {
            ClassicHttpResponse httpResponse = helper.getResponse(remoteUrl("/dir/dir.response"));
            String value = httpResponse.getFirstHeader(HttpHeaders.CONTENT_TYPE).getValue();
            assertThat(value, is("text/plain"));
            String content = CharStreams.toString(new InputStreamReader(httpResponse.getEntity().getContent()));
            assertThat(content, is("response from dir"));
        });
    }