code: public String generate(String url) throws IOException {
  		Object content = this.initializrService.loadServiceCapabilities(url);
  		if (content instanceof InitializrServiceMetadata) {
  			return generateHelp(url, (InitializrServiceMetadata) content);
  		}
  		return content.toString();
  	}
docs: Generate a report for the specified service. The report contains the available
  capabilities as advertised by the root endpoint.
  @param url the url of the service
  @return the report that describes the service
  @throws IOException if the report cannot be generated