code: def setup_method(self):
      self.G = nx.path_graph(9)
      self.dv = nx.to_directed(self.G)
      self.MG = nx.path_graph(9, create_using=nx.MultiGraph())
      self.Mdv = nx.to_directed(self.MG)
  
imports: import pytest
  import networkx
  from networkx.utils import edges_equal, nodes_equal
label_desc: Use image node_id 1 for calling the TestToDirected obj's underlying member method code with example usage: obj.setup_method() without return types