code: def _getWavData(self):
      with self.cached_session():
          sample_data = tf.zeros([1000, 2])
          wav_encoder = tf.audio.encode_wav(sample_data, 16000)
          wav_data = self.evaluate(wav_encoder)
      return wav_data
  
file_path: tensorflow-upstream/tensorflow/examples/speech_commands/label_wav_test.py
imports: import os
  import tensorflow
  from tensorflow.examples.speech_commands import label_wav
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the LabelWavTest obj's underlying member method code with example usage: obj._getWavData() and returns: wav_data