class_docstr: A `Dataset` that list the files according to the input patterns.
code: def element_spec(self):
      return tensor_spec.TensorSpec([], dtypes.string)
  
file_path: tensorflow-upstream/tensorflow/python/data/experimental/ops/matching_files.py
imports: from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.ops import gen_experimental_dataset_ops
label_desc: Use image node_id 2 for calling the MatchingFilesDataset obj's underlying member method code with example usage: obj.element_spec() and returns: tensor_spec