class_docstr: Dummy dataset.
code: def _info(self):
      return self.dataset_info_from_configs(
          features=tfds.features.FeaturesDict({"x": np.int64}),
      )
  
file_path: datasets/tensorflow_datasets/testing/dummy_config_based_datasets/dummy_ds_1/dummy_ds_1_dataset_builder.py
imports: from __future__ import annotations
  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