private void before(Description description) throws Throwable {
    DUnitLauncher.launchIfNeeded(vmCount, false);
    if (isJavaVersionAtLeast(JavaVersion.JAVA_11)) {
      // GEODE-6247: JDK 11 has an issue where native code is reporting committed is 2MB > max.
      IgnoredException.addIgnoredException("committed = 538968064 should be < max = 536870912");
    }
    restoreSystemProperties.beforeDistributedTest(description);
    occupiedVMs = new HashMap<>();
  }
This is only available in each Locator/Server VM, not in the controller (test) VM.
geode-dunit/src/main/java/org/apache/geode/test/dunit/rules/ClusterStartupRule.java