private void dumpPdxTypes(PrintStream printStream) {
    try {
      ArrayList<PdxType> types = new ArrayList<>();
      ArrayList<EnumInfo> enums = new ArrayList<>();
      for (Object i : getPdxTypesAndEnums()) {
        if (i instanceof PdxType) {
          types.add((PdxType) i);
        } else {
          enums.add((EnumInfo) i);
        }
      }
      types.sort(Comparator.comparing(PdxType::getClassName));
      enums.sort(EnumInfo::compareTo);

      printStream.println("PDX Types:");
      for (PdxType type : types) {
        type.toStream(printStream, true);
      }
      printStream.println("PDX Enums:");
      for (EnumInfo e : enums) {
        e.toStream(printStream);
      }
    } catch (IOException ignore) {
    }
  }
Destroy a region which has not been created.

@param regName the name of the region to destroy
geode-core/src/main/java/org/apache/geode/internal/cache/DiskStoreImpl.java