public static void emergencyClose() {
    // volatile fetch
    List members = allAgents;
    for (Object member : members) {
      RemoteGfManagerAgent each = (RemoteGfManagerAgent) member;
      each.system.emergencyClose();
    }
  }
Close all of the RemoteGfManagerAgent's.

@see SystemFailure#emergencyClose()
geode-core/src/main/java/org/apache/geode/internal/admin/remote/RemoteGfManagerAgent.java