code: def test_pcollection_is_not_iterable(self):
      with TestPipeline() as pipeline:
          d = pipeline | beam.Create(range(3))
          assert isinstance(d, beam.PCollection) or isinstance(
              d, beam.pvalue.PCollection
          )
          assert not isinstance(d, Iterable)
  
imports: import os
  from typing import Iterable
  import apache_beam
  from apache_beam.testing.test_pipeline import TestPipeline
  import numpy
  import tensorflow
  from tensorflow_datasets import testing
  from tensorflow_datasets.core import dataset_builder
  from tensorflow_datasets.core import dataset_utils
  from tensorflow_datasets.core.dataset_builders import adhoc_builder
  import tensorflow_datasets.public_api
label_desc: Use image node_id 1 for calling the BeamBuilderTest obj's underlying member method code with example usage: obj.test_pcollection_is_not_iterable() without return types