code: public static TomcatService forConnector(String hostname, Connector connector) {
          requireNonNull(hostname, "hostname");
          requireNonNull(connector, "connector");
  
          return new UnmanagedTomcatService(hostname, connector);
      }
docs: Creates a new {@link TomcatService} from an existing Tomcat {@link Connector} instance.
  If the specified {@link Connector} instance is not configured properly, the returned
  {@link TomcatService} may respond with '503 Service Not Available' error.
  
  @return a new {@link TomcatService}, which will not manage the provided {@link Connector} instance.