@Override
  public ConcurrentMap<Integer, Set<DistributionLocatorId>> getAllLocatorsInfo() {
    return allLocatorsInfo;
  }
A locator from the request is checked against the existing remote locator metadata. If it is
not available then added to existing remote locator metadata and LocatorMembershipListener is
invoked to inform about the newly added locator to all other locators available in remote
locator metadata. As a response, remote locator metadata is sent.
geode-wan/src/main/java/org/apache/geode/cache/wan/internal/client/locator/LocatorMembershipListenerImpl.java