code: public void setLocatorEndpoints(String endpoints) {
          ((ZKBackend) getBackend()).setLocatorEndpoints(endpoints);
          if (LOG.isLoggable(Level.FINE)) {
              LOG.fine("Locator endpoints set to " + endpoints);
          }
      }
docs: Specify the endpoints of all the instances belonging to the service
  locator ensemble this object might potentially be talking to when
  {@link #connect() connecting}. The object will one by one pick an
  endpoint (the order is non-deterministic) to connect to the service
  locator until a connection is established.
  
  @param endpoints comma separated list of endpoints,each corresponding to a
  service locator instance. Each endpoint is specified as a
  host:port pair. At least one endpoint must be specified. Valid
  exmaples are: "127.0.0.1:2181" or
  "sl1.example.com:3210, sl2.example.com:3210, sl3.example.com:3210"