private void handleViewInstalledEvent(ViewInstalledEvent ev) {
    synchronized (membershipViewIdGuard) {
      membershipViewIdAcknowledged = ev.getViewId();
      membershipViewIdGuard.notifyAll();
    }
  }
Returns true if this distribution manager has initiated shutdown
geode-core/src/main/java/org/apache/geode/distributed/internal/ClusterDistributionManager.java