private File getDiskDir() {
    try {
      File file = new File(temporaryFolder.getRoot(), diskStoreName1 + getVMId());
      if (!file.exists()) {
        temporaryFolder.newFolder(diskStoreName1 + getVMId());
      }
      return file.getAbsoluteFile();
    } catch (IOException e) {
      throw new UncheckedIOException(e);
    }
  }
The colocation tree has the regions started in a specific order so that the logging is
predictable. For each entry in the list, the array values are:

<pre>
  [0] - the region name
  [1] - the name of that region's parent
  [2] - the number of warnings that will be logged after the region is created (1 warning for
        each region in the tree that exists that still has 1 or more missing children.)
</pre>
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/partitioned/PersistentColocatedPartitionedRegionDistributedTest.java