code: def test_gw1(self):
      G = read_graph("gw1")
      s = 1
      t = len(G)
      R = build_residual_network(G, "capacity")
      kwargs = {"residual": R}
  
      for flow_func in flow_funcs:
          validate_flows(
              G, s, t, 1202018, flow_func(G, s, t, **kwargs), flow_func
          )
  
file_path: networkx/networkx/algorithms/flow/tests/test_maxflow_large_graph.py
imports: import bz2
  import importlib.resources
  import os
  import pickle
  import pytest
  import networkx
  from networkx.algorithms.flow import boykov_kolmogorov, build_flow_dict, build_residual_network, dinitz, edmonds_karp, preflow_push, shortest_augmenting_path
label_desc: Use image node_id 4 for calling the TestMaxflowLargeGraph obj's underlying member method code with example usage: obj.test_gw1() without return types