code: def test_reader_dask(dask_client, dataset):
      # using dask_cudf
      E = dataset.get_dask_edgelist(download=True)
  
      assert E is not None
      assert isinstance(E, dask_cudf.core.DataFrame)
      dataset.unload()
  
imports: import os
  import gc
  from pathlib import Path
  from tempfile import TemporaryDirectory
  import pandas
  import pytest
  import cudf
  import dask_cudf
  from cugraph.structure import Graph
  from cugraph.testing import RAPIDS_DATASET_ROOT_DIR_PATH, ALL_DATASETS, WEIGHTED_DATASETS, SMALL_DATASETS, BENCHMARKING_DATASETS
  from cugraph import datasets
  from cugraph.dask.common.mg_utils import is_single_gpu
label_desc: Use image node_id 11 for calling a global function with example usage: test_reader_dask(dask_client, dataset) without return types