@Test
  public void heartbeatOversleepCausesWarning() {
    testHeartbeatSleepScenario(sleepLimit -> sleepLimit + 1,
        "Failure detection heartbeat-generation thread overslept by more than a full period. Asleep time: 1,000,000,001 nanoseconds. Period: 500,000,000 nanoseconds.");
  }
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