code: def test_audio_count_zero(self):
      self.skipTest(
          "fails under eager because map_fn() returns float dtype"
      )
  
imports: import glob
  import os
  import numpy
  import tensorflow
  from tensorboard.compat import tf2
  from tensorboard.plugins.audio import metadata
  from tensorboard.plugins.audio import summary
  from tensorboard.util import tensor_util
label_desc: Use image node_id 5 for calling the SummaryV1OpTest obj's underlying member method code with example usage: obj.test_audio_count_zero() without return types