@Override
  public final void postSetUp() throws Exception {
    // Get rid of any existing distributed systems. We want
    // to make assertions about the number of distributed systems
    // we shut down, so we need to start with a clean slate.
    disconnectAllFromDS();
  }
Tests the basic use cases for PR persistence.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/partitioned/ShutdownAllDUnitTest.java