docs: public static UriComponentsBuilder getBuilder() {
  
  		if (RequestContextHolder.getRequestAttributes() == null) {
  			return UriComponentsBuilder.fromPath("/");
  		}
  
  		URI baseUri = getCachedBaseUri();
  
  		return baseUri != null //
  				? UriComponentsBuilder.fromUri(baseUri) //
  				: cacheBaseUri(ServletUriComponentsBuilder.fromCurrentServletMapping());
  	}