How to use TfRecordDataset DatasetToTfRecord tf.io.tfRecordReader

tensorflow-java 0.4
spark 3.1
java 11

Hi :
Now I use tensorflow-java to read tfrecord file ,but can not get the data, and our not have example for it ,the TfRecordDataset DatasetToTfRecord tf.io.tfRecordReader java class have not same api like python ,could we give some example for how to use them. thank

    import org.tensorflow.{Operand, Session,EagerSession}
    import org.tensorflow.op.Ops
    import org.tensorflow.op.data.TfRecordDataset
    import org.tensorflow.op.data.{DatasetToTfRecord, TfRecordDataset}
    val session = EagerSession.create
    val tf = Ops.create(session)
    val  scope = tf.scope()
//    val fileName  =tf.constant( "/Users/zhanghaining/Downloads/tfrecord-kk2-test/")
    val fileName = tf.constant("/Users/zhanghaining/Downloads/BigDL/spark/dl/src/test/resources/tf/mnist_train.tfrecord")
    val compress = tf.constant("")
    val bufferSize = tf.constant(0l)
    val recordDataSet = TfRecordDataset.create(scope,fileName,compress,bufferSize)

    val record = DatasetToTfRecord.create(scope, recordDataSet,fileName,compress)

    val reader =  tf.io.tfRecordReader()

    println(record.op().name() )
    println(record.op().`type`())
    println(recordDataSet.op().numOutputs() )
    println(recordDataSet.asOutput().dataType())

从 issue 中展示的 TfRecordDataset、DatasetToTfRecord 和 tf.io.tfRecordReader 入口点开始，并将它们的 Java API 与所请求的 Python 用法进行比较。完成的标准是提供一个可运行的 tensorflow-java 示例，该示例能够读取 TFRecord 数据并说明如何使用这些 API。