docs: public static FileSystemFactory decorateIfLimited(FileSystemFactory factory, String scheme, Configuration config) {
  		checkNotNull(factory, "factory");
  
  		final ConnectionLimitingSettings settings = ConnectionLimitingSettings.fromConfig(config, scheme);
  
  		// decorate only if any limit is configured
  		if (settings == null) {
  			// no limit configured
  			return factory;
  		}
  		else {
  			return new ConnectionLimitingFactory(factory, settings);
  		}
  	}