public void disconnectAllFromDS() {
    stopManagerQuietly();
    Invoke.invokeInEveryVM("stopManager", this::stopManagerQuietly);
    JUnit4DistributedTestCase.disconnectFromDS();
    Invoke.invokeInEveryVM("disconnectFromDS", JUnit4DistributedTestCase::disconnectFromDS);
  }
Note: Overriding MethodRule is only way to get {@code Object target}
geode-core/src/distributedTest/java/org/apache/geode/management/ManagementTestRule.java