code: def setup_function():
      gc.collect()
  
file_path: cugraph/python/cugraph/cugraph/tests/link_analysis/test_pagerank.py
imports: import gc
  import time
  import pytest
  import numpy
  import networkx
  import cudf
  import cugraph
  from cugraph.testing import utils, DEFAULT_DATASETS
  from cugraph.datasets import karate
label_desc: Use image node_id 5 for calling a global function with example usage: setup_function() without return types