code: def test_project_collaboration(self):
      G = nx.Graph()
      G.add_edge("a", 1)
      G.add_edge("b", 1)
      G.add_edge("b", 2)
      G.add_edge("c", 2)
      G.add_edge("c", 3)
      G.add_edge("c", 4)
      G.add_edge("b", 4)
      P = bipartite.collaboration_weighted_projected_graph(G, "abc")
      assert P["a"]["b"]["weight"] == 1
      assert P["b"]["c"]["weight"] == 2
  
imports: import pytest
  import networkx
  from networkx.algorithms import bipartite
  from networkx.utils import edges_equal, nodes_equal
label_desc: Use image node_id 10 for calling the TestBipartiteProject obj's underlying member method code with example usage: obj.test_project_collaboration() without return types