public static UriTemplate create(String template, Charset charset) {
    return new UriTemplate(template, true, charset);
  }
@Test
  void emptyRelativeTemplate() {
    String template = "/";
    UriTemplate uriTemplate = UriTemplate.create(template, Util.UTF_8);
    assertThat(uriTemplate.expand(Collections.emptyMap())).isEqualToIgnoringCase("/");
  }