code: def test_is_dataset_accessible(self):
      self.assertTrue(gcs_utils.is_dataset_on_gcs("mnist/1.0.0"))
      self.assertFalse(gcs_utils.is_dataset_on_gcs("non_dataset/1.0.0"))
  
file_path: datasets/tensorflow_datasets/core/utils/gcs_utils_test.py
imports: import os
  import tempfile
  import tensorflow_datasets
  from tensorflow_datasets import setup_teardown
  from tensorflow_datasets import testing
  from tensorflow_datasets.core.utils import gcs_utils
  from tensorflow_datasets.testing import test_utils
label_desc: Use image node_id 1 for calling the GcsUtilsTest obj's underlying member method code with example usage: obj.test_is_dataset_accessible() without return types