@Override
  public Exporter<?, ?> getExporter(DataVertical transferDataType) {
    return null;
  }
Simulates importing offline data. For demo purposes only!

<p>Microsoft offline data is used since that is the only form currently supported.
extensions/data-transfer/portability-data-transfer-offline-demo/src/main/java/org/datatransferproject/transfer/offline/OfflineDemoTransferExtension.java