void longUri(String uri) {
   String relonged =
       CompressedURIHandler.longURI(CompressedURIHandler.shortURI(URIs.of(uri))).toString();
   equals(uri, relonged);
   System.out.println(
       uri.length() + "v." + CompressedURIHandler.shortURI(URIs.of(uri)).toString().length());
 }
 @Test
 public void shortUriNotEndingWithSlash() {
   String uri = CompressedURIHandler.shortURI(URIs.of("/foo/bar")).toString();
   assertFalse(uri.endsWith("/"));
   assertTrue(uri.startsWith("/z/"));
 }