@SuppressWarnings("deprecation")
  private void connect(Properties props) {
    system = (InternalDistributedSystem) DistributedSystem.connect(props);
  }
Creates a fresh loner DistributedSystem for each test. Note that the DistributedSystem is the
StatisticsManager/Factory/etc.
geode-core/src/integrationTest/java/org/apache/geode/internal/statistics/GemFireStatSamplerIntegrationTest.java