public <R extends DataModel> ExportResult<R> copyWithExportedData(R replacementData) {
    return new ExportResult<>(this.getType(), replacementData, this.getContinuationData());
  }
Builds a new ExportResult. copying the current one but replacing only the data with
`replacementData`.
portability-spi-transfer/src/main/java/org/datatransferproject/spi/transfer/provider/ExportResult.java