code: def test_get_dataset_buffer():
      buffer = ludwig.datasets.get_buffer("iris")
  
      assert isinstance(buffer, io.BytesIO)
  
file_path: ludwig/tests/ludwig/datasets/test_datasets.py
imports: import io
  import os
  import uuid
  from unittest import mock
  import pandas
  import pytest
  import ludwig.datasets
  from ludwig.api import LudwigModel
  from ludwig.datasets.dataset_config import DatasetConfig
  from ludwig.datasets.loaders.dataset_loader import DatasetState
  from tests.integration_tests.utils import private_test
label_desc: Use image node_id 4 for calling a global function with example usage: test_get_dataset_buffer() without return types