class_docstr: A wrapper around the output of the tf.Transform.
docstr: A DatasetMetadata.
  
  Note: raw_metadata is not guaranteed to exist in the output of tf.transform
  and hence using this could fail, if raw_metadata is not present in
  TFTransformOutput.
  
  Returns:
    A DatasetMetadata
docstr_tok: ["A","DatasetMetadata",".","Note",":","raw_metadata","is","not","guaranteed","to","exist","in","the","output","of","tf.transform","and","hence","using","this","could","fail",",","if","raw_metadata","is","not","present","in","TFTransformOutput",".","Returns",":","A","DatasetMetadata"]
code: def raw_metadata(self) -> dataset_metadata.DatasetMetadata:
      """A DatasetMetadata.
  
      Note: raw_metadata is not guaranteed to exist in the output of tf.transform
      and hence using this could fail, if raw_metadata is not present in
      TFTransformOutput.
  
      Returns:
        A DatasetMetadata
      """
      if self._raw_metadata is None:
          self._raw_metadata = metadata_io.read_metadata(
              os.path.join(
                  self._transform_output_dir, self.RAW_METADATA_DIR
              )
          )
      return self._raw_metadata
  
imports: import json
  import os
  from typing import Any, Dict, List, Mapping, Optional
  import numpy
  import tensorflow
  from tensorflow_transform import common
  from tensorflow_transform import common_types
  from tensorflow_transform import graph_tools
  from tensorflow_transform.analyzers import sanitized_vocab_filename
  from tensorflow_transform.keras_lib import tf_keras
  from tensorflow_transform.saved import saved_transform_io
  from tensorflow_transform.saved import saved_transform_io_v2
  from tensorflow_transform.tf_metadata import dataset_metadata
  from tensorflow_transform.tf_metadata import metadata_io
  from tensorflow_transform.tf_metadata import schema_utils
  from tensorflow.python.framework import ops
  from tensorflow.tools.docs import doc_controls
  from tensorflow_metadata.proto.v0 import schema_pb2
label_desc: Use image node_id 17 for calling the TFTransformOutput obj's underlying member method code with example usage: obj.raw_metadata() and returns: self