private static DUnitBlackboard getBlackboard() {
    if (blackboard == null) {
      blackboard = new DUnitBlackboard();
    }
    return blackboard;
  }
Tests the ability of the {@link Locator} API to start and stop locators running in remote VMs.

@since GemFire 4.0
geode-core/src/distributedTest/java/org/apache/geode/distributed/LocatorDUnitTest.java