class_docstr: Base class for TFRecord-based tests.
code: def _record(self, f, r):
      return compat.as_bytes("Record %d of file %d" % (r, f))
  
imports: import os
  from tensorflow.core.example import example_pb2
  from tensorflow.core.example import feature_pb2
  from tensorflow.python.data.experimental.ops import readers
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.ops import readers
  from tensorflow.python.framework import dtypes
  from tensorflow.python.lib.io import python_io
  from tensorflow.python.ops import parsing_ops
  from tensorflow.python.util import compat
label_desc: Use image node_id 5 for calling the TFRecordTestBase obj's underlying member method code with example usage: obj._record(f, r) and returns: compat