code: def test_uniform_neighbor_sample_empty_start_list():
      df = cudf.DataFrame(
          {
              "src": [0, 1, 2],
              "dst": [0, 1, 2],
              "eid": [2, 4, 6],
              "etp": cudf.Series([1, 1, 2], dtype="int32"),
              "w": [0.0, 0.1, 0.2],
          }
      )
  
      G = cugraph.Graph(directed=True)
      G.from_cudf_edgelist(
          df,
          source="src",
          destination="dst",
          edge_attr=["w", "eid", "etp"],
      )
  
      sampling_results = cugraph.uniform_neighbor_sample(
          G,
          start_list=cudf.DataFrame(
              {
                  "start_list": cudf.Series(dtype="int64"),
                  "batch_id_list": cudf.Series(dtype="int32"),
              }
          ),
          fanout_vals=[2, 2],
          with_replacement=False,
          with_edge_properties=True,
          with_batch_ids=True,
          random_state=32,
      )
  
      assert sampling_results.empty
  
imports: import gc
  import random
  import pytest
  import cupy
  import cudf
  import cugraph
  from cugraph import uniform_neighbor_sample
  from cugraph.testing import UNDIRECTED_DATASETS
  from cugraph.datasets import email_Eu_core, small_tree
  from pylibcugraph.testing.utils import gen_fixture_params_product
label_desc: Use image node_id 11 for calling a global function with example usage: test_uniform_neighbor_sample_empty_start_list() without return types