@Override
  public DistributionLocator addDistributionLocator() {
    DistributionLocatorConfig conf = new DistributionLocatorConfigImpl();
    DistributionLocator locator = createDistributionLocatorImpl(conf);
    synchronized (locatorSet) {
      locatorSet.add(new FutureResult(locator));
    }

    // update locators string...
    setLocators(parseLocatorSet());
    return locator;
  }
Adds a new, unstarted <code>DistributionLocator</code> to this distributed system.
geode-core/src/main/java/org/apache/geode/admin/internal/AdminDistributedSystemImpl.java