code: def test_complete_graph(self):
      N = 50
      G = nx.complete_graph(N)
      nx.set_edge_attributes(G, 5, "capacity")
      R = build_residual_network(G, "capacity")
      kwargs = {"residual": R}
  
      for flow_func in flow_funcs:
          kwargs["flow_func"] = flow_func
          errmsg = f"Assertion failed in function: {flow_func.__name__}"
          flow_value = nx.maximum_flow_value(G, 1, 2, **kwargs)
          assert flow_value == 5 * (N - 1), errmsg
  
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 1 for calling the TestMaxflowLargeGraph obj's underlying member method code with example usage: obj.test_complete_graph() without return types