code: def _get_dataset_keys(h5file):
      """Gets the keys present in the D4RL dataset."""
      keys = []
  
      def visitor(name, item):
          if isinstance(item, h5py.Dataset):
              keys.append(name)
  
      h5file.visititems(visitor)
      return keys
  
file_path: datasets/tensorflow_datasets/d4rl/dataset_utils.py
imports: from typing import Any, Dict
  import h5py
  import numpy
  from tensorflow_datasets.core.utils.lazy_imports_utils import tensorflow
label_desc: Use image node_id 7 for calling a global function with example usage: _get_dataset_keys(h5file) and returns: keys