@Override
  public void setIsCoordinator(boolean isCoordinator) {
    if (isCoordinator) {
      logger.info(
          "Location services has received notification that this node is becoming membership coordinator");
    }
    this.isCoordinator = isCoordinator;
  }
Called initially and after each auto-reconnect. See restart handlers in InternalLocator
up in geode-core. Services must be started before this call.
geode-membership/src/main/java/org/apache/geode/distributed/internal/membership/gms/locator/GMSLocator.java