code: def test_sparse_output_fails(labels, client):
      LabelBinarizer(client=client, sparse_output=True)
  
imports: from cuml.internals.safe_imports import gpu_only_import
  import pytest
  from cuml.dask.preprocessing import LabelBinarizer
  from cuml.testing.utils import array_equal
  import dask
  from cuml.internals.safe_imports import cpu_only_import
label_desc: Use image node_id 2 for calling a global function with example usage: test_sparse_output_fails(labels, client) without return types