docs: private void stopWriterAndClearMasterServerList() {
  		for (Server server : this.masterServersList) {
  			for (OutputWriter writer : server.getOutputWriters()) {
  				try {
  					writer.close();
  				} catch (LifecycleException ex) {
  					log.error("Eror stopping writer: {}", writer);
  				}
  			}
  			for (Query query : server.getQueries()) {
  				for (OutputWriter writer : query.getOutputWriterInstances()) {
  					try {
  						writer.close();
  						log.debug("Stopped writer: {} for query: {}", writer, query);
  					} catch (LifecycleException ex) {
  						log.error("Error stopping writer: {} for query: {}", writer, query, ex);
  					}
  				}
  			}
  		}
  		this.masterServersList = ImmutableList.of();
  	}