code: public static UriTemplate of(String template) {
  
  		Assert.hasText(template, "Template must not be null or empty!");
  
  		return CACHE.computeIfAbsent(template, UriTemplate::new);
  	}
docs: Returns a {@link UriTemplate} for the given {@link String} template.
  
  @param template must not be {@literal null} or empty.
  @return