code: def _is_missing_images(dataset_dir):
      for split in _SPLITS:
          if not os.path.isdir(
              os.path.join(dataset_dir, split, "data")
          ):
              return True
  
      return False
  
imports: import logging
  import os
  from collections import defaultdict
  import eta.core.utils
  import eta.core.web
  import pandas
  import fiftyone
  import fiftyone.core.utils
  import fiftyone.utils.data
  from fiftyone.core.expressions import ViewField
  from fiftyone.core.expressions import VALUE
label_desc: Use image node_id 15 for calling a global function with example usage: _is_missing_images(dataset_dir) and returns: False, True