class_docstr: DatasetBuilder for schema_guided_dialogue dataset.
docstr: Returns the dataset metadata.
docstr_tok: ["Returns","the","dataset","metadata","."]
code: def _info(self) -> tfds.core.DatasetInfo:
      """Returns the dataset metadata."""
      return self.dataset_info_from_configs(
          features=tfds.features.FeaturesDict(
              {
                  # The previous system utterance if one exists.
                  "utterances": tfds.features.Sequence(
                      tfds.features.Text()
                  ),
                  # TODO(arunchaganty): include frame and state annotations
                  "first_speaker": tfds.features.ClassLabel(
                      names=["USER", "SYSTEM"]
                  ),
                  "metadata": {
                      "services": tfds.features.Sequence(
                          {
                              "name": np.str_,
                              # TODO(arunchaganty): include service definitions
                          }
                      )
                  },
              }
          ),
          supervised_keys=None,
          homepage=_DATA_URL,
      )
  
file_path: datasets/tensorflow_datasets/datasets/schema_guided_dialogue/schema_guided_dialogue_dataset_builder.py
imports: from __future__ import annotations
  import json
  import numpy
  import tensorflow_datasets.public_api
label_desc: Use image node_id 1 for calling the Builder obj's underlying member method code with example usage: obj._info() and returns: self