@Test
  public void testShutdown() throws Exception {

    installAView();

    gmsHealthMonitor.stop();
    await().until(() -> gmsHealthMonitor.isShutdown());

  }
Same test as above but with request to initiate removal
geode-membership/src/integrationTest/java/org/apache/geode/distributed/internal/membership/gms/fd/GMSHealthMonitorJUnitTest.java